Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers |
Mike Miller | 3de0a70 | 2005-06-27 14:36:48 -0700 | [diff] [blame] | 3 | * Copyright 2000, 2005 Hewlett-Packard Development Company, L.P. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 13 | * NON INFRINGEMENT. See the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | * |
| 19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <linux/config.h> /* CONFIG_PROC_FS */ |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/pci.h> |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/major.h> |
| 32 | #include <linux/fs.h> |
| 33 | #include <linux/bio.h> |
| 34 | #include <linux/blkpg.h> |
| 35 | #include <linux/timer.h> |
| 36 | #include <linux/proc_fs.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/hdreg.h> |
| 39 | #include <linux/spinlock.h> |
| 40 | #include <linux/compat.h> |
| 41 | #include <asm/uaccess.h> |
| 42 | #include <asm/io.h> |
| 43 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 44 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/blkdev.h> |
| 46 | #include <linux/genhd.h> |
| 47 | #include <linux/completion.h> |
| 48 | |
| 49 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 50 | #define DRIVER_NAME "HP CISS Driver (v 2.6.8)" |
| 51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | /* Embedded module documentation macros - see modules.h */ |
| 54 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 57 | " SA6i P600 P800 P400 P400i E200 E200i"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | MODULE_LICENSE("GPL"); |
| 59 | |
| 60 | #include "cciss_cmd.h" |
| 61 | #include "cciss.h" |
| 62 | #include <linux/cciss_ioctl.h> |
| 63 | |
| 64 | /* define the PCI info for the cards we can control */ |
| 65 | static const struct pci_device_id cciss_pci_device_id[] = { |
| 66 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, |
| 67 | 0x0E11, 0x4070, 0, 0, 0}, |
| 68 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, |
| 69 | 0x0E11, 0x4080, 0, 0, 0}, |
| 70 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, |
| 71 | 0x0E11, 0x4082, 0, 0, 0}, |
| 72 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, |
| 73 | 0x0E11, 0x4083, 0, 0, 0}, |
| 74 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, |
| 75 | 0x0E11, 0x409A, 0, 0, 0}, |
| 76 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, |
| 77 | 0x0E11, 0x409B, 0, 0, 0}, |
| 78 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, |
| 79 | 0x0E11, 0x409C, 0, 0, 0}, |
| 80 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, |
| 81 | 0x0E11, 0x409D, 0, 0, 0}, |
| 82 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, |
| 83 | 0x0E11, 0x4091, 0, 0, 0}, |
| 84 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, |
| 85 | 0x103C, 0x3225, 0, 0, 0}, |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 86 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | 0x103c, 0x3223, 0, 0, 0}, |
Mike Miller | 3de0a70 | 2005-06-27 14:36:48 -0700 | [diff] [blame] | 88 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 89 | 0x103c, 0x3234, 0, 0, 0}, |
Mike Miller | 3de0a70 | 2005-06-27 14:36:48 -0700 | [diff] [blame] | 90 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 91 | 0x103c, 0x3235, 0, 0, 0}, |
| 92 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, |
| 93 | 0x103c, 0x3211, 0, 0, 0}, |
| 94 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, |
| 95 | 0x103c, 0x3212, 0, 0, 0}, |
| 96 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, |
| 97 | 0x103c, 0x3213, 0, 0, 0}, |
| 98 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, |
| 99 | 0x103c, 0x3214, 0, 0, 0}, |
| 100 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, |
| 101 | 0x103c, 0x3215, 0, 0, 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | {0,} |
| 103 | }; |
| 104 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 105 | |
| 106 | #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type)) |
| 107 | |
| 108 | /* board_id = Subsystem Device ID & Vendor ID |
| 109 | * product = Marketing Name for the board |
| 110 | * access = Address of the struct of function pointers |
| 111 | */ |
| 112 | static struct board_type products[] = { |
| 113 | { 0x40700E11, "Smart Array 5300", &SA5_access }, |
| 114 | { 0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 115 | { 0x40820E11, "Smart Array 532", &SA5B_access}, |
| 116 | { 0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 117 | { 0x409A0E11, "Smart Array 641", &SA5_access}, |
| 118 | { 0x409B0E11, "Smart Array 642", &SA5_access}, |
| 119 | { 0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 120 | { 0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 121 | { 0x40910E11, "Smart Array 6i", &SA5_access}, |
| 122 | { 0x3225103C, "Smart Array P600", &SA5_access}, |
| 123 | { 0x3223103C, "Smart Array P800", &SA5_access}, |
Mike Miller | 9dc7a86 | 2005-09-13 01:25:19 -0700 | [diff] [blame] | 124 | { 0x3234103C, "Smart Array P400", &SA5_access}, |
| 125 | { 0x3235103C, "Smart Array P400i", &SA5_access}, |
| 126 | { 0x3211103C, "Smart Array E200i", &SA5_access}, |
| 127 | { 0x3212103C, "Smart Array E200", &SA5_access}, |
| 128 | { 0x3213103C, "Smart Array E200i", &SA5_access}, |
| 129 | { 0x3214103C, "Smart Array E200i", &SA5_access}, |
| 130 | { 0x3215103C, "Smart Array E200i", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | }; |
| 132 | |
| 133 | /* How long to wait (in millesconds) for board to go into simple mode */ |
| 134 | #define MAX_CONFIG_WAIT 30000 |
| 135 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 136 | |
| 137 | /*define how many times we will try a command because of bus resets */ |
| 138 | #define MAX_CMD_RETRIES 3 |
| 139 | |
| 140 | #define READ_AHEAD 1024 |
| 141 | #define NR_CMDS 384 /* #commands that can be outstanding */ |
| 142 | #define MAX_CTLR 32 |
| 143 | |
| 144 | /* Originally cciss driver only supports 8 major numbers */ |
| 145 | #define MAX_CTLR_ORIG 8 |
| 146 | |
| 147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | static ctlr_info_t *hba[MAX_CTLR]; |
| 149 | |
| 150 | static void do_cciss_request(request_queue_t *q); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 151 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | static int cciss_open(struct inode *inode, struct file *filep); |
| 153 | static int cciss_release(struct inode *inode, struct file *filep); |
| 154 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
| 155 | unsigned int cmd, unsigned long arg); |
| 156 | |
| 157 | static int revalidate_allvol(ctlr_info_t *host); |
| 158 | static int cciss_revalidate(struct gendisk *disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 159 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
| 160 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 162 | static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, |
| 163 | int withirq, unsigned int *total_size, unsigned int *block_size); |
| 164 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
| 165 | int withirq, unsigned int total_size, |
| 166 | unsigned int block_size, InquiryData_struct *inq_buff, |
| 167 | drive_info_struct *drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | static void cciss_getgeometry(int cntl_num); |
| 169 | |
| 170 | static void start_io( ctlr_info_t *h); |
| 171 | static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size, |
| 172 | unsigned int use_unit_num, unsigned int log_unit, __u8 page_code, |
| 173 | unsigned char *scsi3addr, int cmd_type); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 174 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
| 175 | unsigned int use_unit_num, unsigned int log_unit, __u8 page_code, |
| 176 | int cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 178 | static void fail_all_cmds(unsigned long ctlr); |
| 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | #ifdef CONFIG_PROC_FS |
| 181 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
| 182 | int length, int *eof, void *data); |
| 183 | static void cciss_procinit(int i); |
| 184 | #else |
| 185 | static void cciss_procinit(int i) {} |
| 186 | #endif /* CONFIG_PROC_FS */ |
| 187 | |
| 188 | #ifdef CONFIG_COMPAT |
| 189 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); |
| 190 | #endif |
| 191 | |
| 192 | static struct block_device_operations cciss_fops = { |
| 193 | .owner = THIS_MODULE, |
| 194 | .open = cciss_open, |
| 195 | .release = cciss_release, |
| 196 | .ioctl = cciss_ioctl, |
| 197 | #ifdef CONFIG_COMPAT |
| 198 | .compat_ioctl = cciss_compat_ioctl, |
| 199 | #endif |
| 200 | .revalidate_disk= cciss_revalidate, |
| 201 | }; |
| 202 | |
| 203 | /* |
| 204 | * Enqueuing and dequeuing functions for cmdlists. |
| 205 | */ |
| 206 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) |
| 207 | { |
| 208 | if (*Qptr == NULL) { |
| 209 | *Qptr = c; |
| 210 | c->next = c->prev = c; |
| 211 | } else { |
| 212 | c->prev = (*Qptr)->prev; |
| 213 | c->next = (*Qptr); |
| 214 | (*Qptr)->prev->next = c; |
| 215 | (*Qptr)->prev = c; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
| 220 | CommandList_struct *c) |
| 221 | { |
| 222 | if (c && c->next != c) { |
| 223 | if (*Qptr == c) *Qptr = c->next; |
| 224 | c->prev->next = c->next; |
| 225 | c->next->prev = c->prev; |
| 226 | } else { |
| 227 | *Qptr = NULL; |
| 228 | } |
| 229 | return c; |
| 230 | } |
| 231 | |
| 232 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 233 | |
| 234 | #ifdef CONFIG_PROC_FS |
| 235 | |
| 236 | /* |
| 237 | * Report information about this controller. |
| 238 | */ |
| 239 | #define ENG_GIG 1000000000 |
| 240 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
| 241 | #define RAID_UNKNOWN 6 |
| 242 | static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG", |
| 243 | "UNKNOWN"}; |
| 244 | |
| 245 | static struct proc_dir_entry *proc_cciss; |
| 246 | |
| 247 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
| 248 | int length, int *eof, void *data) |
| 249 | { |
| 250 | off_t pos = 0; |
| 251 | off_t len = 0; |
| 252 | int size, i, ctlr; |
| 253 | ctlr_info_t *h = (ctlr_info_t*)data; |
| 254 | drive_info_struct *drv; |
| 255 | unsigned long flags; |
| 256 | sector_t vol_sz, vol_sz_frac; |
| 257 | |
| 258 | ctlr = h->ctlr; |
| 259 | |
| 260 | /* prevent displaying bogus info during configuration |
| 261 | * or deconfiguration of a logical volume |
| 262 | */ |
| 263 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 264 | if (h->busy_configuring) { |
| 265 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 266 | return -EBUSY; |
| 267 | } |
| 268 | h->busy_configuring = 1; |
| 269 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 270 | |
| 271 | size = sprintf(buffer, "%s: HP %s Controller\n" |
| 272 | "Board ID: 0x%08lx\n" |
| 273 | "Firmware Version: %c%c%c%c\n" |
| 274 | "IRQ: %d\n" |
| 275 | "Logical drives: %d\n" |
| 276 | "Current Q depth: %d\n" |
| 277 | "Current # commands on controller: %d\n" |
| 278 | "Max Q depth since init: %d\n" |
| 279 | "Max # commands on controller since init: %d\n" |
| 280 | "Max SG entries since init: %d\n\n", |
| 281 | h->devname, |
| 282 | h->product_name, |
| 283 | (unsigned long)h->board_id, |
| 284 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3], |
| 285 | (unsigned int)h->intr, |
| 286 | h->num_luns, |
| 287 | h->Qdepth, h->commands_outstanding, |
| 288 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 289 | |
| 290 | pos += size; len += size; |
| 291 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
| 292 | for(i=0; i<=h->highest_lun; i++) { |
| 293 | |
| 294 | drv = &h->drv[i]; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 295 | if (drv->heads == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | continue; |
| 297 | |
| 298 | vol_sz = drv->nr_blocks; |
| 299 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 300 | vol_sz_frac *= 100; |
| 301 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 302 | |
| 303 | if (drv->raid_level > 5) |
| 304 | drv->raid_level = RAID_UNKNOWN; |
| 305 | size = sprintf(buffer+len, "cciss/c%dd%d:" |
| 306 | "\t%4u.%02uGB\tRAID %s\n", |
| 307 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, |
| 308 | raid_label[drv->raid_level]); |
| 309 | pos += size; len += size; |
| 310 | } |
| 311 | |
| 312 | *eof = 1; |
| 313 | *start = buffer+offset; |
| 314 | len -= offset; |
| 315 | if (len>length) |
| 316 | len = length; |
| 317 | h->busy_configuring = 0; |
| 318 | return len; |
| 319 | } |
| 320 | |
| 321 | static int |
| 322 | cciss_proc_write(struct file *file, const char __user *buffer, |
| 323 | unsigned long count, void *data) |
| 324 | { |
| 325 | unsigned char cmd[80]; |
| 326 | int len; |
| 327 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 328 | ctlr_info_t *h = (ctlr_info_t *) data; |
| 329 | int rc; |
| 330 | #endif |
| 331 | |
| 332 | if (count > sizeof(cmd)-1) return -EINVAL; |
| 333 | if (copy_from_user(cmd, buffer, count)) return -EFAULT; |
| 334 | cmd[count] = '\0'; |
| 335 | len = strlen(cmd); // above 3 lines ensure safety |
| 336 | if (len && cmd[len-1] == '\n') |
| 337 | cmd[--len] = '\0'; |
| 338 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 339 | if (strcmp("engage scsi", cmd)==0) { |
| 340 | rc = cciss_engage_scsi(h->ctlr); |
| 341 | if (rc != 0) return -rc; |
| 342 | return count; |
| 343 | } |
| 344 | /* might be nice to have "disengage" too, but it's not |
| 345 | safely possible. (only 1 module use count, lock issues.) */ |
| 346 | # endif |
| 347 | return -EINVAL; |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Get us a file in /proc/cciss that says something about each controller. |
| 352 | * Create /proc/cciss if it doesn't exist yet. |
| 353 | */ |
| 354 | static void __devinit cciss_procinit(int i) |
| 355 | { |
| 356 | struct proc_dir_entry *pde; |
| 357 | |
| 358 | if (proc_cciss == NULL) { |
| 359 | proc_cciss = proc_mkdir("cciss", proc_root_driver); |
| 360 | if (!proc_cciss) |
| 361 | return; |
| 362 | } |
| 363 | |
| 364 | pde = create_proc_read_entry(hba[i]->devname, |
| 365 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, |
| 366 | proc_cciss, cciss_proc_get_info, hba[i]); |
| 367 | pde->write_proc = cciss_proc_write; |
| 368 | } |
| 369 | #endif /* CONFIG_PROC_FS */ |
| 370 | |
| 371 | /* |
| 372 | * For operations that cannot sleep, a command block is allocated at init, |
| 373 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
| 374 | * which ones are free or in use. For operations that can wait for kmalloc |
| 375 | * to possible sleep, this routine can be called with get_from_pool set to 0. |
| 376 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. |
| 377 | */ |
| 378 | static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool) |
| 379 | { |
| 380 | CommandList_struct *c; |
| 381 | int i; |
| 382 | u64bit temp64; |
| 383 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 384 | |
| 385 | if (!get_from_pool) |
| 386 | { |
| 387 | c = (CommandList_struct *) pci_alloc_consistent( |
| 388 | h->pdev, sizeof(CommandList_struct), &cmd_dma_handle); |
| 389 | if(c==NULL) |
| 390 | return NULL; |
| 391 | memset(c, 0, sizeof(CommandList_struct)); |
| 392 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 393 | c->cmdindex = -1; |
| 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | c->err_info = (ErrorInfo_struct *)pci_alloc_consistent( |
| 396 | h->pdev, sizeof(ErrorInfo_struct), |
| 397 | &err_dma_handle); |
| 398 | |
| 399 | if (c->err_info == NULL) |
| 400 | { |
| 401 | pci_free_consistent(h->pdev, |
| 402 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 403 | return NULL; |
| 404 | } |
| 405 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 406 | } else /* get it out of the controllers pool */ |
| 407 | { |
| 408 | do { |
| 409 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); |
| 410 | if (i == NR_CMDS) |
| 411 | return NULL; |
| 412 | } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0); |
| 413 | #ifdef CCISS_DEBUG |
| 414 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); |
| 415 | #endif |
| 416 | c = h->cmd_pool + i; |
| 417 | memset(c, 0, sizeof(CommandList_struct)); |
| 418 | cmd_dma_handle = h->cmd_pool_dhandle |
| 419 | + i*sizeof(CommandList_struct); |
| 420 | c->err_info = h->errinfo_pool + i; |
| 421 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 422 | err_dma_handle = h->errinfo_pool_dhandle |
| 423 | + i*sizeof(ErrorInfo_struct); |
| 424 | h->nr_allocs++; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 425 | |
| 426 | c->cmdindex = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | c->busaddr = (__u32) cmd_dma_handle; |
| 430 | temp64.val = (__u64) err_dma_handle; |
| 431 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 432 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 433 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
| 434 | |
| 435 | c->ctlr = h->ctlr; |
| 436 | return c; |
| 437 | |
| 438 | |
| 439 | } |
| 440 | |
| 441 | /* |
| 442 | * Frees a command block that was previously allocated with cmd_alloc(). |
| 443 | */ |
| 444 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) |
| 445 | { |
| 446 | int i; |
| 447 | u64bit temp64; |
| 448 | |
| 449 | if( !got_from_pool) |
| 450 | { |
| 451 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 452 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
| 453 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 454 | c->err_info, (dma_addr_t) temp64.val); |
| 455 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 456 | c, (dma_addr_t) c->busaddr); |
| 457 | } else |
| 458 | { |
| 459 | i = c - h->cmd_pool; |
| 460 | clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)); |
| 461 | h->nr_frees++; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 466 | { |
| 467 | return disk->queue->queuedata; |
| 468 | } |
| 469 | |
| 470 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 471 | { |
| 472 | return disk->private_data; |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * Open. Make sure the device is really there. |
| 477 | */ |
| 478 | static int cciss_open(struct inode *inode, struct file *filep) |
| 479 | { |
| 480 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 481 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); |
| 482 | |
| 483 | #ifdef CCISS_DEBUG |
| 484 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); |
| 485 | #endif /* CCISS_DEBUG */ |
| 486 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 487 | if (host->busy_initializing || drv->busy_configuring) |
| 488 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | /* |
| 490 | * Root is allowed to open raw volume zero even if it's not configured |
| 491 | * so array config can still work. Root is also allowed to open any |
| 492 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 493 | * disk information. I don't think I really like this |
| 494 | * but I'm already using way to many device nodes to claim another one |
| 495 | * for "raw controller". |
| 496 | */ |
| 497 | if (drv->nr_blocks == 0) { |
| 498 | if (iminor(inode) != 0) { /* not node 0? */ |
| 499 | /* if not node 0 make sure it is a partition = 0 */ |
| 500 | if (iminor(inode) & 0x0f) { |
| 501 | return -ENXIO; |
| 502 | /* if it is, make sure we have a LUN ID */ |
| 503 | } else if (drv->LunID == 0) { |
| 504 | return -ENXIO; |
| 505 | } |
| 506 | } |
| 507 | if (!capable(CAP_SYS_ADMIN)) |
| 508 | return -EPERM; |
| 509 | } |
| 510 | drv->usage_count++; |
| 511 | host->usage_count++; |
| 512 | return 0; |
| 513 | } |
| 514 | /* |
| 515 | * Close. Sync first. |
| 516 | */ |
| 517 | static int cciss_release(struct inode *inode, struct file *filep) |
| 518 | { |
| 519 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 520 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); |
| 521 | |
| 522 | #ifdef CCISS_DEBUG |
| 523 | printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name); |
| 524 | #endif /* CCISS_DEBUG */ |
| 525 | |
| 526 | drv->usage_count--; |
| 527 | host->usage_count--; |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | #ifdef CONFIG_COMPAT |
| 532 | |
| 533 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) |
| 534 | { |
| 535 | int ret; |
| 536 | lock_kernel(); |
| 537 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); |
| 538 | unlock_kernel(); |
| 539 | return ret; |
| 540 | } |
| 541 | |
| 542 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg); |
| 543 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg); |
| 544 | |
| 545 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) |
| 546 | { |
| 547 | switch (cmd) { |
| 548 | case CCISS_GETPCIINFO: |
| 549 | case CCISS_GETINTINFO: |
| 550 | case CCISS_SETINTINFO: |
| 551 | case CCISS_GETNODENAME: |
| 552 | case CCISS_SETNODENAME: |
| 553 | case CCISS_GETHEARTBEAT: |
| 554 | case CCISS_GETBUSTYPES: |
| 555 | case CCISS_GETFIRMVER: |
| 556 | case CCISS_GETDRIVVER: |
| 557 | case CCISS_REVALIDVOLS: |
| 558 | case CCISS_DEREGDISK: |
| 559 | case CCISS_REGNEWDISK: |
| 560 | case CCISS_REGNEWD: |
| 561 | case CCISS_RESCANDISK: |
| 562 | case CCISS_GETLUNINFO: |
| 563 | return do_ioctl(f, cmd, arg); |
| 564 | |
| 565 | case CCISS_PASSTHRU32: |
| 566 | return cciss_ioctl32_passthru(f, cmd, arg); |
| 567 | case CCISS_BIG_PASSTHRU32: |
| 568 | return cciss_ioctl32_big_passthru(f, cmd, arg); |
| 569 | |
| 570 | default: |
| 571 | return -ENOIOCTLCMD; |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg) |
| 576 | { |
| 577 | IOCTL32_Command_struct __user *arg32 = |
| 578 | (IOCTL32_Command_struct __user *) arg; |
| 579 | IOCTL_Command_struct arg64; |
| 580 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 581 | int err; |
| 582 | u32 cp; |
| 583 | |
| 584 | err = 0; |
| 585 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); |
| 586 | err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); |
| 587 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); |
| 588 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 589 | err |= get_user(cp, &arg32->buf); |
| 590 | arg64.buf = compat_ptr(cp); |
| 591 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 592 | |
| 593 | if (err) |
| 594 | return -EFAULT; |
| 595 | |
| 596 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p); |
| 597 | if (err) |
| 598 | return err; |
| 599 | err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); |
| 600 | if (err) |
| 601 | return -EFAULT; |
| 602 | return err; |
| 603 | } |
| 604 | |
| 605 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg) |
| 606 | { |
| 607 | BIG_IOCTL32_Command_struct __user *arg32 = |
| 608 | (BIG_IOCTL32_Command_struct __user *) arg; |
| 609 | BIG_IOCTL_Command_struct arg64; |
| 610 | BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 611 | int err; |
| 612 | u32 cp; |
| 613 | |
| 614 | err = 0; |
| 615 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); |
| 616 | err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); |
| 617 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); |
| 618 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 619 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 620 | err |= get_user(cp, &arg32->buf); |
| 621 | arg64.buf = compat_ptr(cp); |
| 622 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 623 | |
| 624 | if (err) |
| 625 | return -EFAULT; |
| 626 | |
| 627 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p); |
| 628 | if (err) |
| 629 | return err; |
| 630 | err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); |
| 631 | if (err) |
| 632 | return -EFAULT; |
| 633 | return err; |
| 634 | } |
| 635 | #endif |
| 636 | /* |
| 637 | * ioctl |
| 638 | */ |
| 639 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
| 640 | unsigned int cmd, unsigned long arg) |
| 641 | { |
| 642 | struct block_device *bdev = inode->i_bdev; |
| 643 | struct gendisk *disk = bdev->bd_disk; |
| 644 | ctlr_info_t *host = get_host(disk); |
| 645 | drive_info_struct *drv = get_drv(disk); |
| 646 | int ctlr = host->ctlr; |
| 647 | void __user *argp = (void __user *)arg; |
| 648 | |
| 649 | #ifdef CCISS_DEBUG |
| 650 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); |
| 651 | #endif /* CCISS_DEBUG */ |
| 652 | |
| 653 | switch(cmd) { |
| 654 | case HDIO_GETGEO: |
| 655 | { |
| 656 | struct hd_geometry driver_geo; |
| 657 | if (drv->cylinders) { |
| 658 | driver_geo.heads = drv->heads; |
| 659 | driver_geo.sectors = drv->sectors; |
| 660 | driver_geo.cylinders = drv->cylinders; |
| 661 | } else |
| 662 | return -ENXIO; |
| 663 | driver_geo.start= get_start_sect(inode->i_bdev); |
| 664 | if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry))) |
| 665 | return -EFAULT; |
| 666 | return(0); |
| 667 | } |
| 668 | |
| 669 | case CCISS_GETPCIINFO: |
| 670 | { |
| 671 | cciss_pci_info_struct pciinfo; |
| 672 | |
| 673 | if (!arg) return -EINVAL; |
Mike Miller | cd6fb58 | 2005-06-27 14:36:49 -0700 | [diff] [blame] | 674 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | pciinfo.bus = host->pdev->bus->number; |
| 676 | pciinfo.dev_fn = host->pdev->devfn; |
| 677 | pciinfo.board_id = host->board_id; |
| 678 | if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct ))) |
| 679 | return -EFAULT; |
| 680 | return(0); |
| 681 | } |
| 682 | case CCISS_GETINTINFO: |
| 683 | { |
| 684 | cciss_coalint_struct intinfo; |
| 685 | if (!arg) return -EINVAL; |
| 686 | intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay); |
| 687 | intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount); |
| 688 | if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct ))) |
| 689 | return -EFAULT; |
| 690 | return(0); |
| 691 | } |
| 692 | case CCISS_SETINTINFO: |
| 693 | { |
| 694 | cciss_coalint_struct intinfo; |
| 695 | unsigned long flags; |
| 696 | int i; |
| 697 | |
| 698 | if (!arg) return -EINVAL; |
| 699 | if (!capable(CAP_SYS_ADMIN)) return -EPERM; |
| 700 | if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct))) |
| 701 | return -EFAULT; |
| 702 | if ( (intinfo.delay == 0 ) && (intinfo.count == 0)) |
| 703 | |
| 704 | { |
| 705 | // printk("cciss_ioctl: delay and count cannot be 0\n"); |
| 706 | return( -EINVAL); |
| 707 | } |
| 708 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 709 | /* Update the field, and then ring the doorbell */ |
| 710 | writel( intinfo.delay, |
| 711 | &(host->cfgtable->HostWrite.CoalIntDelay)); |
| 712 | writel( intinfo.count, |
| 713 | &(host->cfgtable->HostWrite.CoalIntCount)); |
| 714 | writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 715 | |
| 716 | for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) { |
| 717 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 718 | & CFGTBL_ChangeReq)) |
| 719 | break; |
| 720 | /* delay and try again */ |
| 721 | udelay(1000); |
| 722 | } |
| 723 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 724 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 725 | return -EAGAIN; |
| 726 | return(0); |
| 727 | } |
| 728 | case CCISS_GETNODENAME: |
| 729 | { |
| 730 | NodeName_type NodeName; |
| 731 | int i; |
| 732 | |
| 733 | if (!arg) return -EINVAL; |
| 734 | for(i=0;i<16;i++) |
| 735 | NodeName[i] = readb(&host->cfgtable->ServerName[i]); |
| 736 | if (copy_to_user(argp, NodeName, sizeof( NodeName_type))) |
| 737 | return -EFAULT; |
| 738 | return(0); |
| 739 | } |
| 740 | case CCISS_SETNODENAME: |
| 741 | { |
| 742 | NodeName_type NodeName; |
| 743 | unsigned long flags; |
| 744 | int i; |
| 745 | |
| 746 | if (!arg) return -EINVAL; |
| 747 | if (!capable(CAP_SYS_ADMIN)) return -EPERM; |
| 748 | |
| 749 | if (copy_from_user(NodeName, argp, sizeof( NodeName_type))) |
| 750 | return -EFAULT; |
| 751 | |
| 752 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 753 | |
| 754 | /* Update the field, and then ring the doorbell */ |
| 755 | for(i=0;i<16;i++) |
| 756 | writeb( NodeName[i], &host->cfgtable->ServerName[i]); |
| 757 | |
| 758 | writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 759 | |
| 760 | for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) { |
| 761 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 762 | & CFGTBL_ChangeReq)) |
| 763 | break; |
| 764 | /* delay and try again */ |
| 765 | udelay(1000); |
| 766 | } |
| 767 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 768 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 769 | return -EAGAIN; |
| 770 | return(0); |
| 771 | } |
| 772 | |
| 773 | case CCISS_GETHEARTBEAT: |
| 774 | { |
| 775 | Heartbeat_type heartbeat; |
| 776 | |
| 777 | if (!arg) return -EINVAL; |
| 778 | heartbeat = readl(&host->cfgtable->HeartBeat); |
| 779 | if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type))) |
| 780 | return -EFAULT; |
| 781 | return(0); |
| 782 | } |
| 783 | case CCISS_GETBUSTYPES: |
| 784 | { |
| 785 | BusTypes_type BusTypes; |
| 786 | |
| 787 | if (!arg) return -EINVAL; |
| 788 | BusTypes = readl(&host->cfgtable->BusTypes); |
| 789 | if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) )) |
| 790 | return -EFAULT; |
| 791 | return(0); |
| 792 | } |
| 793 | case CCISS_GETFIRMVER: |
| 794 | { |
| 795 | FirmwareVer_type firmware; |
| 796 | |
| 797 | if (!arg) return -EINVAL; |
| 798 | memcpy(firmware, host->firm_ver, 4); |
| 799 | |
| 800 | if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type))) |
| 801 | return -EFAULT; |
| 802 | return(0); |
| 803 | } |
| 804 | case CCISS_GETDRIVVER: |
| 805 | { |
| 806 | DriverVer_type DriverVer = DRIVER_VERSION; |
| 807 | |
| 808 | if (!arg) return -EINVAL; |
| 809 | |
| 810 | if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) )) |
| 811 | return -EFAULT; |
| 812 | return(0); |
| 813 | } |
| 814 | |
| 815 | case CCISS_REVALIDVOLS: |
| 816 | if (bdev != bdev->bd_contains || drv != host->drv) |
| 817 | return -ENXIO; |
| 818 | return revalidate_allvol(host); |
| 819 | |
| 820 | case CCISS_GETLUNINFO: { |
| 821 | LogvolInfo_struct luninfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
| 823 | luninfo.LunID = drv->LunID; |
| 824 | luninfo.num_opens = drv->usage_count; |
| 825 | luninfo.num_parts = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | if (copy_to_user(argp, &luninfo, |
| 827 | sizeof(LogvolInfo_struct))) |
| 828 | return -EFAULT; |
| 829 | return(0); |
| 830 | } |
| 831 | case CCISS_DEREGDISK: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 832 | return rebuild_lun_table(host, disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | case CCISS_REGNEWD: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 835 | return rebuild_lun_table(host, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
| 837 | case CCISS_PASSTHRU: |
| 838 | { |
| 839 | IOCTL_Command_struct iocommand; |
| 840 | CommandList_struct *c; |
| 841 | char *buff = NULL; |
| 842 | u64bit temp64; |
| 843 | unsigned long flags; |
| 844 | DECLARE_COMPLETION(wait); |
| 845 | |
| 846 | if (!arg) return -EINVAL; |
| 847 | |
| 848 | if (!capable(CAP_SYS_RAWIO)) return -EPERM; |
| 849 | |
| 850 | if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) )) |
| 851 | return -EFAULT; |
| 852 | if((iocommand.buf_size < 1) && |
| 853 | (iocommand.Request.Type.Direction != XFER_NONE)) |
| 854 | { |
| 855 | return -EINVAL; |
| 856 | } |
| 857 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 858 | /* Check kmalloc limits */ |
| 859 | if(iocommand.buf_size > 128000) |
| 860 | return -EINVAL; |
| 861 | #endif |
| 862 | if(iocommand.buf_size > 0) |
| 863 | { |
| 864 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 865 | if( buff == NULL) |
| 866 | return -EFAULT; |
| 867 | } |
| 868 | if (iocommand.Request.Type.Direction == XFER_WRITE) |
| 869 | { |
| 870 | /* Copy the data into the buffer we created */ |
| 871 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) |
| 872 | { |
| 873 | kfree(buff); |
| 874 | return -EFAULT; |
| 875 | } |
| 876 | } else { |
| 877 | memset(buff, 0, iocommand.buf_size); |
| 878 | } |
| 879 | if ((c = cmd_alloc(host , 0)) == NULL) |
| 880 | { |
| 881 | kfree(buff); |
| 882 | return -ENOMEM; |
| 883 | } |
| 884 | // Fill in the command type |
| 885 | c->cmd_type = CMD_IOCTL_PEND; |
| 886 | // Fill in Command Header |
| 887 | c->Header.ReplyQueue = 0; // unused in simple mode |
| 888 | if( iocommand.buf_size > 0) // buffer to fill |
| 889 | { |
| 890 | c->Header.SGList = 1; |
| 891 | c->Header.SGTotal= 1; |
| 892 | } else // no buffers to fill |
| 893 | { |
| 894 | c->Header.SGList = 0; |
| 895 | c->Header.SGTotal= 0; |
| 896 | } |
| 897 | c->Header.LUN = iocommand.LUN_info; |
| 898 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag |
| 899 | |
| 900 | // Fill in Request block |
| 901 | c->Request = iocommand.Request; |
| 902 | |
| 903 | // Fill in the scatter gather information |
| 904 | if (iocommand.buf_size > 0 ) |
| 905 | { |
| 906 | temp64.val = pci_map_single( host->pdev, buff, |
| 907 | iocommand.buf_size, |
| 908 | PCI_DMA_BIDIRECTIONAL); |
| 909 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 910 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 911 | c->SG[0].Len = iocommand.buf_size; |
| 912 | c->SG[0].Ext = 0; // we are not chaining |
| 913 | } |
| 914 | c->waiting = &wait; |
| 915 | |
| 916 | /* Put the request on the tail of the request queue */ |
| 917 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 918 | addQ(&host->reqQ, c); |
| 919 | host->Qdepth++; |
| 920 | start_io(host); |
| 921 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 922 | |
| 923 | wait_for_completion(&wait); |
| 924 | |
| 925 | /* unlock the buffers from DMA */ |
| 926 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 927 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 928 | pci_unmap_single( host->pdev, (dma_addr_t) temp64.val, |
| 929 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); |
| 930 | |
| 931 | /* Copy the error information out */ |
| 932 | iocommand.error_info = *(c->err_info); |
| 933 | if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) ) |
| 934 | { |
| 935 | kfree(buff); |
| 936 | cmd_free(host, c, 0); |
| 937 | return( -EFAULT); |
| 938 | } |
| 939 | |
| 940 | if (iocommand.Request.Type.Direction == XFER_READ) |
| 941 | { |
| 942 | /* Copy the data out of the buffer we created */ |
| 943 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) |
| 944 | { |
| 945 | kfree(buff); |
| 946 | cmd_free(host, c, 0); |
| 947 | return -EFAULT; |
| 948 | } |
| 949 | } |
| 950 | kfree(buff); |
| 951 | cmd_free(host, c, 0); |
| 952 | return(0); |
| 953 | } |
| 954 | case CCISS_BIG_PASSTHRU: { |
| 955 | BIG_IOCTL_Command_struct *ioc; |
| 956 | CommandList_struct *c; |
| 957 | unsigned char **buff = NULL; |
| 958 | int *buff_size = NULL; |
| 959 | u64bit temp64; |
| 960 | unsigned long flags; |
| 961 | BYTE sg_used = 0; |
| 962 | int status = 0; |
| 963 | int i; |
| 964 | DECLARE_COMPLETION(wait); |
| 965 | __u32 left; |
| 966 | __u32 sz; |
| 967 | BYTE __user *data_ptr; |
| 968 | |
| 969 | if (!arg) |
| 970 | return -EINVAL; |
| 971 | if (!capable(CAP_SYS_RAWIO)) |
| 972 | return -EPERM; |
| 973 | ioc = (BIG_IOCTL_Command_struct *) |
| 974 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 975 | if (!ioc) { |
| 976 | status = -ENOMEM; |
| 977 | goto cleanup1; |
| 978 | } |
| 979 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 980 | status = -EFAULT; |
| 981 | goto cleanup1; |
| 982 | } |
| 983 | if ((ioc->buf_size < 1) && |
| 984 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 985 | status = -EINVAL; |
| 986 | goto cleanup1; |
| 987 | } |
| 988 | /* Check kmalloc limits using all SGs */ |
| 989 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 990 | status = -EINVAL; |
| 991 | goto cleanup1; |
| 992 | } |
| 993 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 994 | status = -EINVAL; |
| 995 | goto cleanup1; |
| 996 | } |
| 997 | buff = (unsigned char **) kmalloc(MAXSGENTRIES * |
| 998 | sizeof(char *), GFP_KERNEL); |
| 999 | if (!buff) { |
| 1000 | status = -ENOMEM; |
| 1001 | goto cleanup1; |
| 1002 | } |
| 1003 | memset(buff, 0, MAXSGENTRIES); |
| 1004 | buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int), |
| 1005 | GFP_KERNEL); |
| 1006 | if (!buff_size) { |
| 1007 | status = -ENOMEM; |
| 1008 | goto cleanup1; |
| 1009 | } |
| 1010 | left = ioc->buf_size; |
| 1011 | data_ptr = ioc->buf; |
| 1012 | while (left) { |
| 1013 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; |
| 1014 | buff_size[sg_used] = sz; |
| 1015 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1016 | if (buff[sg_used] == NULL) { |
| 1017 | status = -ENOMEM; |
| 1018 | goto cleanup1; |
| 1019 | } |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1020 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1021 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1023 | goto cleanup1; |
| 1024 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | } else { |
| 1026 | memset(buff[sg_used], 0, sz); |
| 1027 | } |
| 1028 | left -= sz; |
| 1029 | data_ptr += sz; |
| 1030 | sg_used++; |
| 1031 | } |
| 1032 | if ((c = cmd_alloc(host , 0)) == NULL) { |
| 1033 | status = -ENOMEM; |
| 1034 | goto cleanup1; |
| 1035 | } |
| 1036 | c->cmd_type = CMD_IOCTL_PEND; |
| 1037 | c->Header.ReplyQueue = 0; |
| 1038 | |
| 1039 | if( ioc->buf_size > 0) { |
| 1040 | c->Header.SGList = sg_used; |
| 1041 | c->Header.SGTotal= sg_used; |
| 1042 | } else { |
| 1043 | c->Header.SGList = 0; |
| 1044 | c->Header.SGTotal= 0; |
| 1045 | } |
| 1046 | c->Header.LUN = ioc->LUN_info; |
| 1047 | c->Header.Tag.lower = c->busaddr; |
| 1048 | |
| 1049 | c->Request = ioc->Request; |
| 1050 | if (ioc->buf_size > 0 ) { |
| 1051 | int i; |
| 1052 | for(i=0; i<sg_used; i++) { |
| 1053 | temp64.val = pci_map_single( host->pdev, buff[i], |
| 1054 | buff_size[i], |
| 1055 | PCI_DMA_BIDIRECTIONAL); |
| 1056 | c->SG[i].Addr.lower = temp64.val32.lower; |
| 1057 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 1058 | c->SG[i].Len = buff_size[i]; |
| 1059 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1060 | } |
| 1061 | } |
| 1062 | c->waiting = &wait; |
| 1063 | /* Put the request on the tail of the request queue */ |
| 1064 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1065 | addQ(&host->reqQ, c); |
| 1066 | host->Qdepth++; |
| 1067 | start_io(host); |
| 1068 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1069 | wait_for_completion(&wait); |
| 1070 | /* unlock the buffers from DMA */ |
| 1071 | for(i=0; i<sg_used; i++) { |
| 1072 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1073 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1074 | pci_unmap_single( host->pdev, (dma_addr_t) temp64.val, |
| 1075 | buff_size[i], PCI_DMA_BIDIRECTIONAL); |
| 1076 | } |
| 1077 | /* Copy the error information out */ |
| 1078 | ioc->error_info = *(c->err_info); |
| 1079 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1080 | cmd_free(host, c, 0); |
| 1081 | status = -EFAULT; |
| 1082 | goto cleanup1; |
| 1083 | } |
| 1084 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1085 | /* Copy the data out of the buffer we created */ |
| 1086 | BYTE __user *ptr = ioc->buf; |
| 1087 | for(i=0; i< sg_used; i++) { |
| 1088 | if (copy_to_user(ptr, buff[i], buff_size[i])) { |
| 1089 | cmd_free(host, c, 0); |
| 1090 | status = -EFAULT; |
| 1091 | goto cleanup1; |
| 1092 | } |
| 1093 | ptr += buff_size[i]; |
| 1094 | } |
| 1095 | } |
| 1096 | cmd_free(host, c, 0); |
| 1097 | status = 0; |
| 1098 | cleanup1: |
| 1099 | if (buff) { |
| 1100 | for(i=0; i<sg_used; i++) |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1101 | kfree(buff[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | kfree(buff); |
| 1103 | } |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1104 | kfree(buff_size); |
| 1105 | kfree(ioc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | return(status); |
| 1107 | } |
| 1108 | default: |
| 1109 | return -ENOTTY; |
| 1110 | } |
| 1111 | |
| 1112 | } |
| 1113 | |
| 1114 | /* |
| 1115 | * revalidate_allvol is for online array config utilities. After a |
| 1116 | * utility reconfigures the drives in the array, it can use this function |
| 1117 | * (through an ioctl) to make the driver zap any previous disk structs for |
| 1118 | * that controller and get new ones. |
| 1119 | * |
| 1120 | * Right now I'm using the getgeometry() function to do this, but this |
| 1121 | * function should probably be finer grained and allow you to revalidate one |
| 1122 | * particualar logical volume (instead of all of them on a particular |
| 1123 | * controller). |
| 1124 | */ |
| 1125 | static int revalidate_allvol(ctlr_info_t *host) |
| 1126 | { |
| 1127 | int ctlr = host->ctlr, i; |
| 1128 | unsigned long flags; |
| 1129 | |
| 1130 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1131 | if (host->usage_count > 1) { |
| 1132 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1133 | printk(KERN_WARNING "cciss: Device busy for volume" |
| 1134 | " revalidation (usage=%d)\n", host->usage_count); |
| 1135 | return -EBUSY; |
| 1136 | } |
| 1137 | host->usage_count++; |
| 1138 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1139 | |
| 1140 | for(i=0; i< NWD; i++) { |
| 1141 | struct gendisk *disk = host->gendisk[i]; |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1142 | if (disk) { |
| 1143 | request_queue_t *q = disk->queue; |
| 1144 | |
| 1145 | if (disk->flags & GENHD_FL_UP) |
| 1146 | del_gendisk(disk); |
| 1147 | if (q) |
| 1148 | blk_cleanup_queue(q); |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1149 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | } |
| 1151 | |
| 1152 | /* |
| 1153 | * Set the partition and block size structures for all volumes |
| 1154 | * on this controller to zero. We will reread all of this data |
| 1155 | */ |
| 1156 | memset(host->drv, 0, sizeof(drive_info_struct) |
| 1157 | * CISS_MAX_LUN); |
| 1158 | /* |
| 1159 | * Tell the array controller not to give us any interrupts while |
| 1160 | * we check the new geometry. Then turn interrupts back on when |
| 1161 | * we're done. |
| 1162 | */ |
| 1163 | host->access.set_intr_mask(host, CCISS_INTR_OFF); |
| 1164 | cciss_getgeometry(ctlr); |
| 1165 | host->access.set_intr_mask(host, CCISS_INTR_ON); |
| 1166 | |
| 1167 | /* Loop through each real device */ |
| 1168 | for (i = 0; i < NWD; i++) { |
| 1169 | struct gendisk *disk = host->gendisk[i]; |
| 1170 | drive_info_struct *drv = &(host->drv[i]); |
| 1171 | /* we must register the controller even if no disks exist */ |
| 1172 | /* this is for the online array utilities */ |
| 1173 | if (!drv->heads && i) |
| 1174 | continue; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 1175 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | set_capacity(disk, drv->nr_blocks); |
| 1177 | add_disk(disk); |
| 1178 | } |
| 1179 | host->usage_count--; |
| 1180 | return 0; |
| 1181 | } |
| 1182 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1183 | /* This function will check the usage_count of the drive to be updated/added. |
| 1184 | * If the usage_count is zero then the drive information will be updated and |
| 1185 | * the disk will be re-registered with the kernel. If not then it will be |
| 1186 | * left alone for the next reboot. The exception to this is disk 0 which |
| 1187 | * will always be left registered with the kernel since it is also the |
| 1188 | * controller node. Any changes to disk 0 will show up on the next |
| 1189 | * reboot. |
| 1190 | */ |
| 1191 | static void cciss_update_drive_info(int ctlr, int drv_index) |
| 1192 | { |
| 1193 | ctlr_info_t *h = hba[ctlr]; |
| 1194 | struct gendisk *disk; |
| 1195 | ReadCapdata_struct *size_buff = NULL; |
| 1196 | InquiryData_struct *inq_buff = NULL; |
| 1197 | unsigned int block_size; |
| 1198 | unsigned int total_size; |
| 1199 | unsigned long flags = 0; |
| 1200 | int ret = 0; |
| 1201 | |
| 1202 | /* if the disk already exists then deregister it before proceeding*/ |
| 1203 | if (h->drv[drv_index].raid_level != -1){ |
| 1204 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1205 | h->drv[drv_index].busy_configuring = 1; |
| 1206 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1207 | ret = deregister_disk(h->gendisk[drv_index], |
| 1208 | &h->drv[drv_index], 0); |
| 1209 | h->drv[drv_index].busy_configuring = 0; |
| 1210 | } |
| 1211 | |
| 1212 | /* If the disk is in use return */ |
| 1213 | if (ret) |
| 1214 | return; |
| 1215 | |
| 1216 | |
| 1217 | /* Get information about the disk and modify the driver sturcture */ |
| 1218 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); |
| 1219 | if (size_buff == NULL) |
| 1220 | goto mem_msg; |
| 1221 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); |
| 1222 | if (inq_buff == NULL) |
| 1223 | goto mem_msg; |
| 1224 | |
| 1225 | cciss_read_capacity(ctlr, drv_index, size_buff, 1, |
| 1226 | &total_size, &block_size); |
| 1227 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
| 1228 | inq_buff, &h->drv[drv_index]); |
| 1229 | |
| 1230 | ++h->num_luns; |
| 1231 | disk = h->gendisk[drv_index]; |
| 1232 | set_capacity(disk, h->drv[drv_index].nr_blocks); |
| 1233 | |
| 1234 | |
| 1235 | /* if it's the controller it's already added */ |
| 1236 | if (drv_index){ |
| 1237 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
| 1238 | |
| 1239 | /* Set up queue information */ |
| 1240 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; |
| 1241 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); |
| 1242 | |
| 1243 | /* This is a hardware imposed limit. */ |
| 1244 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); |
| 1245 | |
| 1246 | /* This is a limit in the driver and could be eliminated. */ |
| 1247 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); |
| 1248 | |
| 1249 | blk_queue_max_sectors(disk->queue, 512); |
| 1250 | |
| 1251 | disk->queue->queuedata = hba[ctlr]; |
| 1252 | |
| 1253 | blk_queue_hardsect_size(disk->queue, |
| 1254 | hba[ctlr]->drv[drv_index].block_size); |
| 1255 | |
| 1256 | h->drv[drv_index].queue = disk->queue; |
| 1257 | add_disk(disk); |
| 1258 | } |
| 1259 | |
| 1260 | freeret: |
| 1261 | kfree(size_buff); |
| 1262 | kfree(inq_buff); |
| 1263 | return; |
| 1264 | mem_msg: |
| 1265 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1266 | goto freeret; |
| 1267 | } |
| 1268 | |
| 1269 | /* This function will find the first index of the controllers drive array |
| 1270 | * that has a -1 for the raid_level and will return that index. This is |
| 1271 | * where new drives will be added. If the index to be returned is greater |
| 1272 | * than the highest_lun index for the controller then highest_lun is set |
| 1273 | * to this new index. If there are no available indexes then -1 is returned. |
| 1274 | */ |
| 1275 | static int cciss_find_free_drive_index(int ctlr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1277 | int i; |
| 1278 | |
| 1279 | for (i=0; i < CISS_MAX_LUN; i++){ |
| 1280 | if (hba[ctlr]->drv[i].raid_level == -1){ |
| 1281 | if (i > hba[ctlr]->highest_lun) |
| 1282 | hba[ctlr]->highest_lun = i; |
| 1283 | return i; |
| 1284 | } |
| 1285 | } |
| 1286 | return -1; |
| 1287 | } |
| 1288 | |
| 1289 | /* This function will add and remove logical drives from the Logical |
| 1290 | * drive array of the controller and maintain persistancy of ordering |
| 1291 | * so that mount points are preserved until the next reboot. This allows |
| 1292 | * for the removal of logical drives in the middle of the drive array |
| 1293 | * without a re-ordering of those drives. |
| 1294 | * INPUT |
| 1295 | * h = The controller to perform the operations on |
| 1296 | * del_disk = The disk to remove if specified. If the value given |
| 1297 | * is NULL then no disk is removed. |
| 1298 | */ |
| 1299 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
| 1300 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | int ctlr = h->ctlr; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1302 | int num_luns; |
| 1303 | ReportLunData_struct *ld_buff = NULL; |
| 1304 | drive_info_struct *drv = NULL; |
| 1305 | int return_code; |
| 1306 | int listlength = 0; |
| 1307 | int i; |
| 1308 | int drv_found; |
| 1309 | int drv_index = 0; |
| 1310 | __u32 lunid = 0; |
| 1311 | unsigned long flags; |
| 1312 | |
| 1313 | /* Set busy_configuring flag for this operation */ |
| 1314 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1315 | if (h->num_luns >= CISS_MAX_LUN){ |
| 1316 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1317 | return -EINVAL; |
| 1318 | } |
| 1319 | |
| 1320 | if (h->busy_configuring){ |
| 1321 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1322 | return -EBUSY; |
| 1323 | } |
| 1324 | h->busy_configuring = 1; |
| 1325 | |
| 1326 | /* if del_disk is NULL then we are being called to add a new disk |
| 1327 | * and update the logical drive table. If it is not NULL then |
| 1328 | * we will check if the disk is in use or not. |
| 1329 | */ |
| 1330 | if (del_disk != NULL){ |
| 1331 | drv = get_drv(del_disk); |
| 1332 | drv->busy_configuring = 1; |
| 1333 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1334 | return_code = deregister_disk(del_disk, drv, 1); |
| 1335 | drv->busy_configuring = 0; |
| 1336 | h->busy_configuring = 0; |
| 1337 | return return_code; |
| 1338 | } else { |
| 1339 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1340 | if (!capable(CAP_SYS_RAWIO)) |
| 1341 | return -EPERM; |
| 1342 | |
| 1343 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 1344 | if (ld_buff == NULL) |
| 1345 | goto mem_msg; |
| 1346 | |
| 1347 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, |
| 1348 | sizeof(ReportLunData_struct), 0, 0, 0, |
| 1349 | TYPE_CMD); |
| 1350 | |
| 1351 | if (return_code == IO_OK){ |
| 1352 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; |
| 1353 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; |
| 1354 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; |
| 1355 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
| 1356 | } else{ /* reading number of logical volumes failed */ |
| 1357 | printk(KERN_WARNING "cciss: report logical volume" |
| 1358 | " command failed\n"); |
| 1359 | listlength = 0; |
| 1360 | goto freeret; |
| 1361 | } |
| 1362 | |
| 1363 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 1364 | if (num_luns > CISS_MAX_LUN){ |
| 1365 | num_luns = CISS_MAX_LUN; |
| 1366 | printk(KERN_WARNING "cciss: more luns configured" |
| 1367 | " on controller than can be handled by" |
| 1368 | " this driver.\n"); |
| 1369 | } |
| 1370 | |
| 1371 | /* Compare controller drive array to drivers drive array. |
| 1372 | * Check for updates in the drive information and any new drives |
| 1373 | * on the controller. |
| 1374 | */ |
| 1375 | for (i=0; i < num_luns; i++){ |
| 1376 | int j; |
| 1377 | |
| 1378 | drv_found = 0; |
| 1379 | |
| 1380 | lunid = (0xff & |
| 1381 | (unsigned int)(ld_buff->LUN[i][3])) << 24; |
| 1382 | lunid |= (0xff & |
| 1383 | (unsigned int)(ld_buff->LUN[i][2])) << 16; |
| 1384 | lunid |= (0xff & |
| 1385 | (unsigned int)(ld_buff->LUN[i][1])) << 8; |
| 1386 | lunid |= 0xff & |
| 1387 | (unsigned int)(ld_buff->LUN[i][0]); |
| 1388 | |
| 1389 | /* Find if the LUN is already in the drive array |
| 1390 | * of the controller. If so then update its info |
| 1391 | * if not is use. If it does not exist then find |
| 1392 | * the first free index and add it. |
| 1393 | */ |
| 1394 | for (j=0; j <= h->highest_lun; j++){ |
| 1395 | if (h->drv[j].LunID == lunid){ |
| 1396 | drv_index = j; |
| 1397 | drv_found = 1; |
| 1398 | } |
| 1399 | } |
| 1400 | |
| 1401 | /* check if the drive was found already in the array */ |
| 1402 | if (!drv_found){ |
| 1403 | drv_index = cciss_find_free_drive_index(ctlr); |
| 1404 | if (drv_index == -1) |
| 1405 | goto freeret; |
| 1406 | |
| 1407 | } |
| 1408 | h->drv[drv_index].LunID = lunid; |
| 1409 | cciss_update_drive_info(ctlr, drv_index); |
| 1410 | } /* end for */ |
| 1411 | } /* end else */ |
| 1412 | |
| 1413 | freeret: |
| 1414 | kfree(ld_buff); |
| 1415 | h->busy_configuring = 0; |
| 1416 | /* We return -1 here to tell the ACU that we have registered/updated |
| 1417 | * all of the drives that we can and to keep it from calling us |
| 1418 | * additional times. |
| 1419 | */ |
| 1420 | return -1; |
| 1421 | mem_msg: |
| 1422 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1423 | goto freeret; |
| 1424 | } |
| 1425 | |
| 1426 | /* This function will deregister the disk and it's queue from the |
| 1427 | * kernel. It must be called with the controller lock held and the |
| 1428 | * drv structures busy_configuring flag set. It's parameters are: |
| 1429 | * |
| 1430 | * disk = This is the disk to be deregistered |
| 1431 | * drv = This is the drive_info_struct associated with the disk to be |
| 1432 | * deregistered. It contains information about the disk used |
| 1433 | * by the driver. |
| 1434 | * clear_all = This flag determines whether or not the disk information |
| 1435 | * is going to be completely cleared out and the highest_lun |
| 1436 | * reset. Sometimes we want to clear out information about |
| 1437 | * the disk in preperation for re-adding it. In this case |
| 1438 | * the highest_lun should be left unchanged and the LunID |
| 1439 | * should not be cleared. |
| 1440 | */ |
| 1441 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
| 1442 | int clear_all) |
| 1443 | { |
| 1444 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | |
| 1446 | if (!capable(CAP_SYS_RAWIO)) |
| 1447 | return -EPERM; |
| 1448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | /* make sure logical volume is NOT is use */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1450 | if(clear_all || (h->gendisk[0] == disk)) { |
| 1451 | if (drv->usage_count > 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | return -EBUSY; |
| 1453 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1454 | else |
| 1455 | if( drv->usage_count > 0 ) |
| 1456 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1458 | /* invalidate the devices and deregister the disk. If it is disk |
| 1459 | * zero do not deregister it but just zero out it's values. This |
| 1460 | * allows us to delete disk zero but keep the controller registered. |
| 1461 | */ |
| 1462 | if (h->gendisk[0] != disk){ |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1463 | if (disk) { |
| 1464 | request_queue_t *q = disk->queue; |
| 1465 | if (disk->flags & GENHD_FL_UP) |
| 1466 | del_gendisk(disk); |
Mike Miller | 2f6331f | 2005-12-12 22:17:14 -0800 | [diff] [blame] | 1467 | if (q) { |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1468 | blk_cleanup_queue(q); |
Mike Miller | 2f6331f | 2005-12-12 22:17:14 -0800 | [diff] [blame] | 1469 | drv->queue = NULL; |
| 1470 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | --h->num_luns; |
| 1475 | /* zero out the disk size info */ |
| 1476 | drv->nr_blocks = 0; |
| 1477 | drv->block_size = 0; |
| 1478 | drv->heads = 0; |
| 1479 | drv->sectors = 0; |
| 1480 | drv->cylinders = 0; |
| 1481 | drv->raid_level = -1; /* This can be used as a flag variable to |
| 1482 | * indicate that this element of the drive |
| 1483 | * array is free. |
| 1484 | */ |
| 1485 | |
| 1486 | if (clear_all){ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | /* check to see if it was the last disk */ |
| 1488 | if (drv == h->drv + h->highest_lun) { |
| 1489 | /* if so, find the new hightest lun */ |
| 1490 | int i, newhighest =-1; |
| 1491 | for(i=0; i<h->highest_lun; i++) { |
| 1492 | /* if the disk has size > 0, it is available */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1493 | if (h->drv[i].heads) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | newhighest = i; |
| 1495 | } |
| 1496 | h->highest_lun = newhighest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1498 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | drv->LunID = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1500 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | return(0); |
| 1502 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
| 1505 | size_t size, |
| 1506 | unsigned int use_unit_num, /* 0: address the controller, |
| 1507 | 1: address logical volume log_unit, |
| 1508 | 2: periph device address is scsi3addr */ |
| 1509 | unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr, |
| 1510 | int cmd_type) |
| 1511 | { |
| 1512 | ctlr_info_t *h= hba[ctlr]; |
| 1513 | u64bit buff_dma_handle; |
| 1514 | int status = IO_OK; |
| 1515 | |
| 1516 | c->cmd_type = CMD_IOCTL_PEND; |
| 1517 | c->Header.ReplyQueue = 0; |
| 1518 | if( buff != NULL) { |
| 1519 | c->Header.SGList = 1; |
| 1520 | c->Header.SGTotal= 1; |
| 1521 | } else { |
| 1522 | c->Header.SGList = 0; |
| 1523 | c->Header.SGTotal= 0; |
| 1524 | } |
| 1525 | c->Header.Tag.lower = c->busaddr; |
| 1526 | |
| 1527 | c->Request.Type.Type = cmd_type; |
| 1528 | if (cmd_type == TYPE_CMD) { |
| 1529 | switch(cmd) { |
| 1530 | case CISS_INQUIRY: |
| 1531 | /* If the logical unit number is 0 then, this is going |
| 1532 | to controller so It's a physical command |
| 1533 | mode = 0 target = 0. So we have nothing to write. |
| 1534 | otherwise, if use_unit_num == 1, |
| 1535 | mode = 1(volume set addressing) target = LUNID |
| 1536 | otherwise, if use_unit_num == 2, |
| 1537 | mode = 0(periph dev addr) target = scsi3addr */ |
| 1538 | if (use_unit_num == 1) { |
| 1539 | c->Header.LUN.LogDev.VolId= |
| 1540 | h->drv[log_unit].LunID; |
| 1541 | c->Header.LUN.LogDev.Mode = 1; |
| 1542 | } else if (use_unit_num == 2) { |
| 1543 | memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8); |
| 1544 | c->Header.LUN.LogDev.Mode = 0; |
| 1545 | } |
| 1546 | /* are we trying to read a vital product page */ |
| 1547 | if(page_code != 0) { |
| 1548 | c->Request.CDB[1] = 0x01; |
| 1549 | c->Request.CDB[2] = page_code; |
| 1550 | } |
| 1551 | c->Request.CDBLen = 6; |
| 1552 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1553 | c->Request.Type.Direction = XFER_READ; |
| 1554 | c->Request.Timeout = 0; |
| 1555 | c->Request.CDB[0] = CISS_INQUIRY; |
| 1556 | c->Request.CDB[4] = size & 0xFF; |
| 1557 | break; |
| 1558 | case CISS_REPORT_LOG: |
| 1559 | case CISS_REPORT_PHYS: |
| 1560 | /* Talking to controller so It's a physical command |
| 1561 | mode = 00 target = 0. Nothing to write. |
| 1562 | */ |
| 1563 | c->Request.CDBLen = 12; |
| 1564 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1565 | c->Request.Type.Direction = XFER_READ; |
| 1566 | c->Request.Timeout = 0; |
| 1567 | c->Request.CDB[0] = cmd; |
| 1568 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
| 1569 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 1570 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 1571 | c->Request.CDB[9] = size & 0xFF; |
| 1572 | break; |
| 1573 | |
| 1574 | case CCISS_READ_CAPACITY: |
| 1575 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; |
| 1576 | c->Header.LUN.LogDev.Mode = 1; |
| 1577 | c->Request.CDBLen = 10; |
| 1578 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1579 | c->Request.Type.Direction = XFER_READ; |
| 1580 | c->Request.Timeout = 0; |
| 1581 | c->Request.CDB[0] = cmd; |
| 1582 | break; |
| 1583 | case CCISS_CACHE_FLUSH: |
| 1584 | c->Request.CDBLen = 12; |
| 1585 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1586 | c->Request.Type.Direction = XFER_WRITE; |
| 1587 | c->Request.Timeout = 0; |
| 1588 | c->Request.CDB[0] = BMIC_WRITE; |
| 1589 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
| 1590 | break; |
| 1591 | default: |
| 1592 | printk(KERN_WARNING |
| 1593 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
| 1594 | return(IO_ERROR); |
| 1595 | } |
| 1596 | } else if (cmd_type == TYPE_MSG) { |
| 1597 | switch (cmd) { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1598 | case 0: /* ABORT message */ |
| 1599 | c->Request.CDBLen = 12; |
| 1600 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1601 | c->Request.Type.Direction = XFER_WRITE; |
| 1602 | c->Request.Timeout = 0; |
| 1603 | c->Request.CDB[0] = cmd; /* abort */ |
| 1604 | c->Request.CDB[1] = 0; /* abort a command */ |
| 1605 | /* buff contains the tag of the command to abort */ |
| 1606 | memcpy(&c->Request.CDB[4], buff, 8); |
| 1607 | break; |
| 1608 | case 1: /* RESET message */ |
| 1609 | c->Request.CDBLen = 12; |
| 1610 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1611 | c->Request.Type.Direction = XFER_WRITE; |
| 1612 | c->Request.Timeout = 0; |
| 1613 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
| 1614 | c->Request.CDB[0] = cmd; /* reset */ |
| 1615 | c->Request.CDB[1] = 0x04; /* reset a LUN */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | case 3: /* No-Op message */ |
| 1617 | c->Request.CDBLen = 1; |
| 1618 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1619 | c->Request.Type.Direction = XFER_WRITE; |
| 1620 | c->Request.Timeout = 0; |
| 1621 | c->Request.CDB[0] = cmd; |
| 1622 | break; |
| 1623 | default: |
| 1624 | printk(KERN_WARNING |
| 1625 | "cciss%d: unknown message type %d\n", |
| 1626 | ctlr, cmd); |
| 1627 | return IO_ERROR; |
| 1628 | } |
| 1629 | } else { |
| 1630 | printk(KERN_WARNING |
| 1631 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
| 1632 | return IO_ERROR; |
| 1633 | } |
| 1634 | /* Fill in the scatter gather information */ |
| 1635 | if (size > 0) { |
| 1636 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
| 1637 | buff, size, PCI_DMA_BIDIRECTIONAL); |
| 1638 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 1639 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 1640 | c->SG[0].Len = size; |
| 1641 | c->SG[0].Ext = 0; /* we are not chaining */ |
| 1642 | } |
| 1643 | return status; |
| 1644 | } |
| 1645 | static int sendcmd_withirq(__u8 cmd, |
| 1646 | int ctlr, |
| 1647 | void *buff, |
| 1648 | size_t size, |
| 1649 | unsigned int use_unit_num, |
| 1650 | unsigned int log_unit, |
| 1651 | __u8 page_code, |
| 1652 | int cmd_type) |
| 1653 | { |
| 1654 | ctlr_info_t *h = hba[ctlr]; |
| 1655 | CommandList_struct *c; |
| 1656 | u64bit buff_dma_handle; |
| 1657 | unsigned long flags; |
| 1658 | int return_status; |
| 1659 | DECLARE_COMPLETION(wait); |
| 1660 | |
| 1661 | if ((c = cmd_alloc(h , 0)) == NULL) |
| 1662 | return -ENOMEM; |
| 1663 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
| 1664 | log_unit, page_code, NULL, cmd_type); |
| 1665 | if (return_status != IO_OK) { |
| 1666 | cmd_free(h, c, 0); |
| 1667 | return return_status; |
| 1668 | } |
| 1669 | resend_cmd2: |
| 1670 | c->waiting = &wait; |
| 1671 | |
| 1672 | /* Put the request on the tail of the queue and send it */ |
| 1673 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1674 | addQ(&h->reqQ, c); |
| 1675 | h->Qdepth++; |
| 1676 | start_io(h); |
| 1677 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1678 | |
| 1679 | wait_for_completion(&wait); |
| 1680 | |
| 1681 | if(c->err_info->CommandStatus != 0) |
| 1682 | { /* an error has occurred */ |
| 1683 | switch(c->err_info->CommandStatus) |
| 1684 | { |
| 1685 | case CMD_TARGET_STATUS: |
| 1686 | printk(KERN_WARNING "cciss: cmd %p has " |
| 1687 | " completed with errors\n", c); |
| 1688 | if( c->err_info->ScsiStatus) |
| 1689 | { |
| 1690 | printk(KERN_WARNING "cciss: cmd %p " |
| 1691 | "has SCSI Status = %x\n", |
| 1692 | c, |
| 1693 | c->err_info->ScsiStatus); |
| 1694 | } |
| 1695 | |
| 1696 | break; |
| 1697 | case CMD_DATA_UNDERRUN: |
| 1698 | case CMD_DATA_OVERRUN: |
| 1699 | /* expected for inquire and report lun commands */ |
| 1700 | break; |
| 1701 | case CMD_INVALID: |
| 1702 | printk(KERN_WARNING "cciss: Cmd %p is " |
| 1703 | "reported invalid\n", c); |
| 1704 | return_status = IO_ERROR; |
| 1705 | break; |
| 1706 | case CMD_PROTOCOL_ERR: |
| 1707 | printk(KERN_WARNING "cciss: cmd %p has " |
| 1708 | "protocol error \n", c); |
| 1709 | return_status = IO_ERROR; |
| 1710 | break; |
| 1711 | case CMD_HARDWARE_ERR: |
| 1712 | printk(KERN_WARNING "cciss: cmd %p had " |
| 1713 | " hardware error\n", c); |
| 1714 | return_status = IO_ERROR; |
| 1715 | break; |
| 1716 | case CMD_CONNECTION_LOST: |
| 1717 | printk(KERN_WARNING "cciss: cmd %p had " |
| 1718 | "connection lost\n", c); |
| 1719 | return_status = IO_ERROR; |
| 1720 | break; |
| 1721 | case CMD_ABORTED: |
| 1722 | printk(KERN_WARNING "cciss: cmd %p was " |
| 1723 | "aborted\n", c); |
| 1724 | return_status = IO_ERROR; |
| 1725 | break; |
| 1726 | case CMD_ABORT_FAILED: |
| 1727 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 1728 | "abort failed\n", c); |
| 1729 | return_status = IO_ERROR; |
| 1730 | break; |
| 1731 | case CMD_UNSOLICITED_ABORT: |
| 1732 | printk(KERN_WARNING |
| 1733 | "cciss%d: unsolicited abort %p\n", |
| 1734 | ctlr, c); |
| 1735 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 1736 | printk(KERN_WARNING |
| 1737 | "cciss%d: retrying %p\n", |
| 1738 | ctlr, c); |
| 1739 | c->retry_count++; |
| 1740 | /* erase the old error information */ |
| 1741 | memset(c->err_info, 0, |
| 1742 | sizeof(ErrorInfo_struct)); |
| 1743 | return_status = IO_OK; |
| 1744 | INIT_COMPLETION(wait); |
| 1745 | goto resend_cmd2; |
| 1746 | } |
| 1747 | return_status = IO_ERROR; |
| 1748 | break; |
| 1749 | default: |
| 1750 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 1751 | "unknown status %x\n", c, |
| 1752 | c->err_info->CommandStatus); |
| 1753 | return_status = IO_ERROR; |
| 1754 | } |
| 1755 | } |
| 1756 | /* unlock the buffers from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 1757 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 1758 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val, |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 1760 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | cmd_free(h, c, 0); |
| 1762 | return(return_status); |
| 1763 | |
| 1764 | } |
| 1765 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
| 1766 | int withirq, unsigned int total_size, |
| 1767 | unsigned int block_size, InquiryData_struct *inq_buff, |
| 1768 | drive_info_struct *drv) |
| 1769 | { |
| 1770 | int return_code; |
| 1771 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
| 1772 | if (withirq) |
| 1773 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, |
| 1774 | inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD); |
| 1775 | else |
| 1776 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, |
| 1777 | sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD); |
| 1778 | if (return_code == IO_OK) { |
| 1779 | if(inq_buff->data_byte[8] == 0xFF) { |
| 1780 | printk(KERN_WARNING |
| 1781 | "cciss: reading geometry failed, volume " |
| 1782 | "does not support reading geometry\n"); |
| 1783 | drv->block_size = block_size; |
| 1784 | drv->nr_blocks = total_size; |
| 1785 | drv->heads = 255; |
| 1786 | drv->sectors = 32; // Sectors per track |
| 1787 | drv->cylinders = total_size / 255 / 32; |
| 1788 | } else { |
| 1789 | unsigned int t; |
| 1790 | |
| 1791 | drv->block_size = block_size; |
| 1792 | drv->nr_blocks = total_size; |
| 1793 | drv->heads = inq_buff->data_byte[6]; |
| 1794 | drv->sectors = inq_buff->data_byte[7]; |
| 1795 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 1796 | drv->cylinders += inq_buff->data_byte[5]; |
| 1797 | drv->raid_level = inq_buff->data_byte[8]; |
| 1798 | t = drv->heads * drv->sectors; |
| 1799 | if (t > 1) { |
| 1800 | drv->cylinders = total_size/t; |
| 1801 | } |
| 1802 | } |
| 1803 | } else { /* Get geometry failed */ |
| 1804 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
| 1805 | } |
| 1806 | printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n", |
| 1807 | drv->heads, drv->sectors, drv->cylinders); |
| 1808 | } |
| 1809 | static void |
| 1810 | cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, |
| 1811 | int withirq, unsigned int *total_size, unsigned int *block_size) |
| 1812 | { |
| 1813 | int return_code; |
| 1814 | memset(buf, 0, sizeof(*buf)); |
| 1815 | if (withirq) |
| 1816 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, |
| 1817 | ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD); |
| 1818 | else |
| 1819 | return_code = sendcmd(CCISS_READ_CAPACITY, |
| 1820 | ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD); |
| 1821 | if (return_code == IO_OK) { |
| 1822 | *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1; |
| 1823 | *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0])); |
| 1824 | } else { /* read capacity command failed */ |
| 1825 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 1826 | *total_size = 0; |
| 1827 | *block_size = BLOCK_SIZE; |
| 1828 | } |
| 1829 | printk(KERN_INFO " blocks= %u block_size= %d\n", |
| 1830 | *total_size, *block_size); |
| 1831 | return; |
| 1832 | } |
| 1833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | static int cciss_revalidate(struct gendisk *disk) |
| 1835 | { |
| 1836 | ctlr_info_t *h = get_host(disk); |
| 1837 | drive_info_struct *drv = get_drv(disk); |
| 1838 | int logvol; |
| 1839 | int FOUND=0; |
| 1840 | unsigned int block_size; |
| 1841 | unsigned int total_size; |
| 1842 | ReadCapdata_struct *size_buff = NULL; |
| 1843 | InquiryData_struct *inq_buff = NULL; |
| 1844 | |
| 1845 | for(logvol=0; logvol < CISS_MAX_LUN; logvol++) |
| 1846 | { |
| 1847 | if(h->drv[logvol].LunID == drv->LunID) { |
| 1848 | FOUND=1; |
| 1849 | break; |
| 1850 | } |
| 1851 | } |
| 1852 | |
| 1853 | if (!FOUND) return 1; |
| 1854 | |
| 1855 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); |
| 1856 | if (size_buff == NULL) |
| 1857 | { |
| 1858 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 1859 | return 1; |
| 1860 | } |
| 1861 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); |
| 1862 | if (inq_buff == NULL) |
| 1863 | { |
| 1864 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 1865 | kfree(size_buff); |
| 1866 | return 1; |
| 1867 | } |
| 1868 | |
| 1869 | cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size); |
| 1870 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv); |
| 1871 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 1872 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | set_capacity(disk, drv->nr_blocks); |
| 1874 | |
| 1875 | kfree(size_buff); |
| 1876 | kfree(inq_buff); |
| 1877 | return 0; |
| 1878 | } |
| 1879 | |
| 1880 | /* |
| 1881 | * Wait polling for a command to complete. |
| 1882 | * The memory mapped FIFO is polled for the completion. |
| 1883 | * Used only at init time, interrupts from the HBA are disabled. |
| 1884 | */ |
| 1885 | static unsigned long pollcomplete(int ctlr) |
| 1886 | { |
| 1887 | unsigned long done; |
| 1888 | int i; |
| 1889 | |
| 1890 | /* Wait (up to 20 seconds) for a command to complete */ |
| 1891 | |
| 1892 | for (i = 20 * HZ; i > 0; i--) { |
| 1893 | done = hba[ctlr]->access.command_completed(hba[ctlr]); |
Nishanth Aravamudan | 86e8486 | 2005-09-10 00:27:28 -0700 | [diff] [blame] | 1894 | if (done == FIFO_EMPTY) |
| 1895 | schedule_timeout_uninterruptible(1); |
| 1896 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | return (done); |
| 1898 | } |
| 1899 | /* Invalid address to tell caller we ran out of time */ |
| 1900 | return 1; |
| 1901 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1902 | |
| 1903 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) |
| 1904 | { |
| 1905 | /* We get in here if sendcmd() is polling for completions |
| 1906 | and gets some command back that it wasn't expecting -- |
| 1907 | something other than that which it just sent down. |
| 1908 | Ordinarily, that shouldn't happen, but it can happen when |
| 1909 | the scsi tape stuff gets into error handling mode, and |
| 1910 | starts using sendcmd() to try to abort commands and |
| 1911 | reset tape drives. In that case, sendcmd may pick up |
| 1912 | completions of commands that were sent to logical drives |
| 1913 | through the block i/o system, or cciss ioctls completing, etc. |
| 1914 | In that case, we need to save those completions for later |
| 1915 | processing by the interrupt handler. |
| 1916 | */ |
| 1917 | |
| 1918 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 1919 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
| 1920 | |
| 1921 | /* If it's not the scsi tape stuff doing error handling, (abort */ |
| 1922 | /* or reset) then we don't expect anything weird. */ |
| 1923 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { |
| 1924 | #endif |
| 1925 | printk( KERN_WARNING "cciss cciss%d: SendCmd " |
| 1926 | "Invalid command list address returned! (%lx)\n", |
| 1927 | ctlr, complete); |
| 1928 | /* not much we can do. */ |
| 1929 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 1930 | return 1; |
| 1931 | } |
| 1932 | |
| 1933 | /* We've sent down an abort or reset, but something else |
| 1934 | has completed */ |
| 1935 | if (srl->ncompletions >= (NR_CMDS + 2)) { |
| 1936 | /* Uh oh. No room to save it for later... */ |
| 1937 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " |
| 1938 | "reject list overflow, command lost!\n", ctlr); |
| 1939 | return 1; |
| 1940 | } |
| 1941 | /* Save it for later */ |
| 1942 | srl->complete[srl->ncompletions] = complete; |
| 1943 | srl->ncompletions++; |
| 1944 | #endif |
| 1945 | return 0; |
| 1946 | } |
| 1947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | /* |
| 1949 | * Send a command to the controller, and wait for it to complete. |
| 1950 | * Only used at init time. |
| 1951 | */ |
| 1952 | static int sendcmd( |
| 1953 | __u8 cmd, |
| 1954 | int ctlr, |
| 1955 | void *buff, |
| 1956 | size_t size, |
| 1957 | unsigned int use_unit_num, /* 0: address the controller, |
| 1958 | 1: address logical volume log_unit, |
| 1959 | 2: periph device address is scsi3addr */ |
| 1960 | unsigned int log_unit, |
| 1961 | __u8 page_code, |
| 1962 | unsigned char *scsi3addr, |
| 1963 | int cmd_type) |
| 1964 | { |
| 1965 | CommandList_struct *c; |
| 1966 | int i; |
| 1967 | unsigned long complete; |
| 1968 | ctlr_info_t *info_p= hba[ctlr]; |
| 1969 | u64bit buff_dma_handle; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1970 | int status, done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | |
| 1972 | if ((c = cmd_alloc(info_p, 1)) == NULL) { |
| 1973 | printk(KERN_WARNING "cciss: unable to get memory"); |
| 1974 | return(IO_ERROR); |
| 1975 | } |
| 1976 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
| 1977 | log_unit, page_code, scsi3addr, cmd_type); |
| 1978 | if (status != IO_OK) { |
| 1979 | cmd_free(info_p, c, 1); |
| 1980 | return status; |
| 1981 | } |
| 1982 | resend_cmd1: |
| 1983 | /* |
| 1984 | * Disable interrupt |
| 1985 | */ |
| 1986 | #ifdef CCISS_DEBUG |
| 1987 | printk(KERN_DEBUG "cciss: turning intr off\n"); |
| 1988 | #endif /* CCISS_DEBUG */ |
| 1989 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); |
| 1990 | |
| 1991 | /* Make sure there is room in the command FIFO */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1992 | /* Actually it should be completely empty at this time */ |
| 1993 | /* unless we are in here doing error handling for the scsi */ |
| 1994 | /* tape side of the driver. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | for (i = 200000; i > 0; i--) |
| 1996 | { |
| 1997 | /* if fifo isn't full go */ |
| 1998 | if (!(info_p->access.fifo_full(info_p))) |
| 1999 | { |
| 2000 | |
| 2001 | break; |
| 2002 | } |
| 2003 | udelay(10); |
| 2004 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," |
| 2005 | " waiting!\n", ctlr); |
| 2006 | } |
| 2007 | /* |
| 2008 | * Send the cmd |
| 2009 | */ |
| 2010 | info_p->access.submit_command(info_p, c); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2011 | done = 0; |
| 2012 | do { |
| 2013 | complete = pollcomplete(ctlr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
| 2015 | #ifdef CCISS_DEBUG |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2016 | printk(KERN_DEBUG "cciss: command completed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | #endif /* CCISS_DEBUG */ |
| 2018 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2019 | if (complete == 1) { |
| 2020 | printk( KERN_WARNING |
| 2021 | "cciss cciss%d: SendCmd Timeout out, " |
| 2022 | "No command list address returned!\n", |
| 2023 | ctlr); |
| 2024 | status = IO_ERROR; |
| 2025 | done = 1; |
| 2026 | break; |
| 2027 | } |
| 2028 | |
| 2029 | /* This will need to change for direct lookup completions */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | if ( (complete & CISS_ERROR_BIT) |
| 2031 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) |
| 2032 | { |
| 2033 | /* if data overrun or underun on Report command |
| 2034 | ignore it |
| 2035 | */ |
| 2036 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
| 2037 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || |
| 2038 | (c->Request.CDB[0] == CISS_INQUIRY)) && |
| 2039 | ((c->err_info->CommandStatus == |
| 2040 | CMD_DATA_OVERRUN) || |
| 2041 | (c->err_info->CommandStatus == |
| 2042 | CMD_DATA_UNDERRUN) |
| 2043 | )) |
| 2044 | { |
| 2045 | complete = c->busaddr; |
| 2046 | } else { |
| 2047 | if (c->err_info->CommandStatus == |
| 2048 | CMD_UNSOLICITED_ABORT) { |
| 2049 | printk(KERN_WARNING "cciss%d: " |
| 2050 | "unsolicited abort %p\n", |
| 2051 | ctlr, c); |
| 2052 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 2053 | printk(KERN_WARNING |
| 2054 | "cciss%d: retrying %p\n", |
| 2055 | ctlr, c); |
| 2056 | c->retry_count++; |
| 2057 | /* erase the old error */ |
| 2058 | /* information */ |
| 2059 | memset(c->err_info, 0, |
| 2060 | sizeof(ErrorInfo_struct)); |
| 2061 | goto resend_cmd1; |
| 2062 | } else { |
| 2063 | printk(KERN_WARNING |
| 2064 | "cciss%d: retried %p too " |
| 2065 | "many times\n", ctlr, c); |
| 2066 | status = IO_ERROR; |
| 2067 | goto cleanup1; |
| 2068 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2069 | } else if (c->err_info->CommandStatus == CMD_UNABORTABLE) { |
| 2070 | printk(KERN_WARNING "cciss%d: command could not be aborted.\n", ctlr); |
| 2071 | status = IO_ERROR; |
| 2072 | goto cleanup1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | } |
| 2074 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
| 2075 | " Error %x \n", ctlr, |
| 2076 | c->err_info->CommandStatus); |
| 2077 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
| 2078 | " offensive info\n" |
| 2079 | " size %x\n num %x value %x\n", ctlr, |
| 2080 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_size, |
| 2081 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_num, |
| 2082 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_value); |
| 2083 | status = IO_ERROR; |
| 2084 | goto cleanup1; |
| 2085 | } |
| 2086 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2087 | /* This will need changing for direct lookup completions */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | if (complete != c->busaddr) { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2089 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
| 2090 | BUG(); /* we are pretty much hosed if we get here. */ |
| 2091 | } |
| 2092 | continue; |
| 2093 | } else |
| 2094 | done = 1; |
| 2095 | } while (!done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | |
| 2097 | cleanup1: |
| 2098 | /* unlock the data buffer from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2099 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2100 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2102 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2103 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2104 | /* if we saved some commands for later, process them now. */ |
| 2105 | if (info_p->scsi_rejects.ncompletions > 0) |
| 2106 | do_cciss_intr(0, info_p, NULL); |
| 2107 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | cmd_free(info_p, c, 1); |
| 2109 | return (status); |
| 2110 | } |
| 2111 | /* |
| 2112 | * Map (physical) PCI mem into (virtual) kernel space |
| 2113 | */ |
| 2114 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2115 | { |
| 2116 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2117 | ulong page_offs = ((ulong) base) - page_base; |
| 2118 | void __iomem *page_remapped = ioremap(page_base, page_offs+size); |
| 2119 | |
| 2120 | return page_remapped ? (page_remapped + page_offs) : NULL; |
| 2121 | } |
| 2122 | |
| 2123 | /* |
| 2124 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2125 | * the Q to wait for completion. |
| 2126 | */ |
| 2127 | static void start_io( ctlr_info_t *h) |
| 2128 | { |
| 2129 | CommandList_struct *c; |
| 2130 | |
| 2131 | while(( c = h->reqQ) != NULL ) |
| 2132 | { |
| 2133 | /* can't do anything if fifo is full */ |
| 2134 | if ((h->access.fifo_full(h))) { |
| 2135 | printk(KERN_WARNING "cciss: fifo full\n"); |
| 2136 | break; |
| 2137 | } |
| 2138 | |
| 2139 | /* Get the frist entry from the Request Q */ |
| 2140 | removeQ(&(h->reqQ), c); |
| 2141 | h->Qdepth--; |
| 2142 | |
| 2143 | /* Tell the controller execute command */ |
| 2144 | h->access.submit_command(h, c); |
| 2145 | |
| 2146 | /* Put job onto the completed Q */ |
| 2147 | addQ (&(h->cmpQ), c); |
| 2148 | } |
| 2149 | } |
| 2150 | |
| 2151 | static inline void complete_buffers(struct bio *bio, int status) |
| 2152 | { |
| 2153 | while (bio) { |
| 2154 | struct bio *xbh = bio->bi_next; |
| 2155 | int nr_sectors = bio_sectors(bio); |
| 2156 | |
| 2157 | bio->bi_next = NULL; |
| 2158 | blk_finished_io(len); |
| 2159 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
| 2160 | bio = xbh; |
| 2161 | } |
| 2162 | |
| 2163 | } |
| 2164 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
| 2165 | /* Zeros out the error record and then resends the command back */ |
| 2166 | /* to the controller */ |
| 2167 | static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c) |
| 2168 | { |
| 2169 | /* erase the old error information */ |
| 2170 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2171 | |
| 2172 | /* add it to software queue and then send it to the controller */ |
| 2173 | addQ(&(h->reqQ),c); |
| 2174 | h->Qdepth++; |
| 2175 | if(h->Qdepth > h->maxQsinceinit) |
| 2176 | h->maxQsinceinit = h->Qdepth; |
| 2177 | |
| 2178 | start_io(h); |
| 2179 | } |
| 2180 | /* checks the status of the job and calls complete buffers to mark all |
| 2181 | * buffers for the completed job. |
| 2182 | */ |
| 2183 | static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd, |
| 2184 | int timeout) |
| 2185 | { |
| 2186 | int status = 1; |
| 2187 | int i; |
| 2188 | int retry_cmd = 0; |
| 2189 | u64bit temp64; |
| 2190 | |
| 2191 | if (timeout) |
| 2192 | status = 0; |
| 2193 | |
| 2194 | if(cmd->err_info->CommandStatus != 0) |
| 2195 | { /* an error has occurred */ |
| 2196 | switch(cmd->err_info->CommandStatus) |
| 2197 | { |
| 2198 | unsigned char sense_key; |
| 2199 | case CMD_TARGET_STATUS: |
| 2200 | status = 0; |
| 2201 | |
| 2202 | if( cmd->err_info->ScsiStatus == 0x02) |
| 2203 | { |
| 2204 | printk(KERN_WARNING "cciss: cmd %p " |
| 2205 | "has CHECK CONDITION " |
| 2206 | " byte 2 = 0x%x\n", cmd, |
| 2207 | cmd->err_info->SenseInfo[2] |
| 2208 | ); |
| 2209 | /* check the sense key */ |
| 2210 | sense_key = 0xf & |
| 2211 | cmd->err_info->SenseInfo[2]; |
| 2212 | /* no status or recovered error */ |
| 2213 | if((sense_key == 0x0) || |
| 2214 | (sense_key == 0x1)) |
| 2215 | { |
| 2216 | status = 1; |
| 2217 | } |
| 2218 | } else |
| 2219 | { |
| 2220 | printk(KERN_WARNING "cciss: cmd %p " |
| 2221 | "has SCSI Status 0x%x\n", |
| 2222 | cmd, cmd->err_info->ScsiStatus); |
| 2223 | } |
| 2224 | break; |
| 2225 | case CMD_DATA_UNDERRUN: |
| 2226 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2227 | " completed with data underrun " |
| 2228 | "reported\n", cmd); |
| 2229 | break; |
| 2230 | case CMD_DATA_OVERRUN: |
| 2231 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2232 | " completed with data overrun " |
| 2233 | "reported\n", cmd); |
| 2234 | break; |
| 2235 | case CMD_INVALID: |
| 2236 | printk(KERN_WARNING "cciss: cmd %p is " |
| 2237 | "reported invalid\n", cmd); |
| 2238 | status = 0; |
| 2239 | break; |
| 2240 | case CMD_PROTOCOL_ERR: |
| 2241 | printk(KERN_WARNING "cciss: cmd %p has " |
| 2242 | "protocol error \n", cmd); |
| 2243 | status = 0; |
| 2244 | break; |
| 2245 | case CMD_HARDWARE_ERR: |
| 2246 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2247 | " hardware error\n", cmd); |
| 2248 | status = 0; |
| 2249 | break; |
| 2250 | case CMD_CONNECTION_LOST: |
| 2251 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2252 | "connection lost\n", cmd); |
| 2253 | status=0; |
| 2254 | break; |
| 2255 | case CMD_ABORTED: |
| 2256 | printk(KERN_WARNING "cciss: cmd %p was " |
| 2257 | "aborted\n", cmd); |
| 2258 | status=0; |
| 2259 | break; |
| 2260 | case CMD_ABORT_FAILED: |
| 2261 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 2262 | "abort failed\n", cmd); |
| 2263 | status=0; |
| 2264 | break; |
| 2265 | case CMD_UNSOLICITED_ABORT: |
| 2266 | printk(KERN_WARNING "cciss%d: unsolicited " |
| 2267 | "abort %p\n", h->ctlr, cmd); |
| 2268 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 2269 | retry_cmd=1; |
| 2270 | printk(KERN_WARNING |
| 2271 | "cciss%d: retrying %p\n", |
| 2272 | h->ctlr, cmd); |
| 2273 | cmd->retry_count++; |
| 2274 | } else |
| 2275 | printk(KERN_WARNING |
| 2276 | "cciss%d: %p retried too " |
| 2277 | "many times\n", h->ctlr, cmd); |
| 2278 | status=0; |
| 2279 | break; |
| 2280 | case CMD_TIMEOUT: |
| 2281 | printk(KERN_WARNING "cciss: cmd %p timedout\n", |
| 2282 | cmd); |
| 2283 | status=0; |
| 2284 | break; |
| 2285 | default: |
| 2286 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 2287 | "unknown status %x\n", cmd, |
| 2288 | cmd->err_info->CommandStatus); |
| 2289 | status=0; |
| 2290 | } |
| 2291 | } |
| 2292 | /* We need to return this command */ |
| 2293 | if(retry_cmd) { |
| 2294 | resend_cciss_cmd(h,cmd); |
| 2295 | return; |
| 2296 | } |
| 2297 | /* command did not need to be retried */ |
| 2298 | /* unmap the DMA mapping for all the scatter gather elements */ |
| 2299 | for(i=0; i<cmd->Header.SGList; i++) { |
| 2300 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
| 2301 | temp64.val32.upper = cmd->SG[i].Addr.upper; |
| 2302 | pci_unmap_page(hba[cmd->ctlr]->pdev, |
| 2303 | temp64.val, cmd->SG[i].Len, |
| 2304 | (cmd->Request.Type.Direction == XFER_READ) ? |
| 2305 | PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); |
| 2306 | } |
| 2307 | complete_buffers(cmd->rq->bio, status); |
| 2308 | |
| 2309 | #ifdef CCISS_DEBUG |
| 2310 | printk("Done with %p\n", cmd->rq); |
| 2311 | #endif /* CCISS_DEBUG */ |
| 2312 | |
| 2313 | end_that_request_last(cmd->rq); |
| 2314 | cmd_free(h,cmd,1); |
| 2315 | } |
| 2316 | |
| 2317 | /* |
| 2318 | * Get a request and submit it to the controller. |
| 2319 | */ |
| 2320 | static void do_cciss_request(request_queue_t *q) |
| 2321 | { |
| 2322 | ctlr_info_t *h= q->queuedata; |
| 2323 | CommandList_struct *c; |
| 2324 | int start_blk, seg; |
| 2325 | struct request *creq; |
| 2326 | u64bit temp64; |
| 2327 | struct scatterlist tmp_sg[MAXSGENTRIES]; |
| 2328 | drive_info_struct *drv; |
| 2329 | int i, dir; |
| 2330 | |
| 2331 | /* We call start_io here in case there is a command waiting on the |
| 2332 | * queue that has not been sent. |
| 2333 | */ |
| 2334 | if (blk_queue_plugged(q)) |
| 2335 | goto startio; |
| 2336 | |
| 2337 | queue: |
| 2338 | creq = elv_next_request(q); |
| 2339 | if (!creq) |
| 2340 | goto startio; |
| 2341 | |
| 2342 | if (creq->nr_phys_segments > MAXSGENTRIES) |
| 2343 | BUG(); |
| 2344 | |
| 2345 | if (( c = cmd_alloc(h, 1)) == NULL) |
| 2346 | goto full; |
| 2347 | |
| 2348 | blkdev_dequeue_request(creq); |
| 2349 | |
| 2350 | spin_unlock_irq(q->queue_lock); |
| 2351 | |
| 2352 | c->cmd_type = CMD_RWREQ; |
| 2353 | c->rq = creq; |
| 2354 | |
| 2355 | /* fill in the request */ |
| 2356 | drv = creq->rq_disk->private_data; |
| 2357 | c->Header.ReplyQueue = 0; // unused in simple mode |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2358 | /* got command from pool, so use the command block index instead */ |
| 2359 | /* for direct lookups. */ |
| 2360 | /* The first 2 bits are reserved for controller error reporting. */ |
| 2361 | c->Header.Tag.lower = (c->cmdindex << 3); |
| 2362 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | c->Header.LUN.LogDev.VolId= drv->LunID; |
| 2364 | c->Header.LUN.LogDev.Mode = 1; |
| 2365 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
| 2366 | c->Request.Type.Type = TYPE_CMD; // It is a command. |
| 2367 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2368 | c->Request.Type.Direction = |
| 2369 | (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE; |
| 2370 | c->Request.Timeout = 0; // Don't time out |
| 2371 | c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE; |
| 2372 | start_blk = creq->sector; |
| 2373 | #ifdef CCISS_DEBUG |
| 2374 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector, |
| 2375 | (int) creq->nr_sectors); |
| 2376 | #endif /* CCISS_DEBUG */ |
| 2377 | |
| 2378 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 2379 | |
| 2380 | /* get the DMA records for the setup */ |
| 2381 | if (c->Request.Type.Direction == XFER_READ) |
| 2382 | dir = PCI_DMA_FROMDEVICE; |
| 2383 | else |
| 2384 | dir = PCI_DMA_TODEVICE; |
| 2385 | |
| 2386 | for (i=0; i<seg; i++) |
| 2387 | { |
| 2388 | c->SG[i].Len = tmp_sg[i].length; |
| 2389 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, |
| 2390 | tmp_sg[i].offset, tmp_sg[i].length, |
| 2391 | dir); |
| 2392 | c->SG[i].Addr.lower = temp64.val32.lower; |
| 2393 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 2394 | c->SG[i].Ext = 0; // we are not chaining |
| 2395 | } |
| 2396 | /* track how many SG entries we are using */ |
| 2397 | if( seg > h->maxSG) |
| 2398 | h->maxSG = seg; |
| 2399 | |
| 2400 | #ifdef CCISS_DEBUG |
| 2401 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg); |
| 2402 | #endif /* CCISS_DEBUG */ |
| 2403 | |
| 2404 | c->Header.SGList = c->Header.SGTotal = seg; |
| 2405 | c->Request.CDB[1]= 0; |
| 2406 | c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB |
| 2407 | c->Request.CDB[3]= (start_blk >> 16) & 0xff; |
| 2408 | c->Request.CDB[4]= (start_blk >> 8) & 0xff; |
| 2409 | c->Request.CDB[5]= start_blk & 0xff; |
| 2410 | c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB |
| 2411 | c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff; |
| 2412 | c->Request.CDB[8]= creq->nr_sectors & 0xff; |
| 2413 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 2414 | |
| 2415 | spin_lock_irq(q->queue_lock); |
| 2416 | |
| 2417 | addQ(&(h->reqQ),c); |
| 2418 | h->Qdepth++; |
| 2419 | if(h->Qdepth > h->maxQsinceinit) |
| 2420 | h->maxQsinceinit = h->Qdepth; |
| 2421 | |
| 2422 | goto queue; |
| 2423 | full: |
| 2424 | blk_stop_queue(q); |
| 2425 | startio: |
| 2426 | /* We will already have the driver lock here so not need |
| 2427 | * to lock it. |
| 2428 | */ |
| 2429 | start_io(h); |
| 2430 | } |
| 2431 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2432 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 2433 | { |
| 2434 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2435 | /* Any rejects from sendcmd() lying around? Process them first */ |
| 2436 | if (h->scsi_rejects.ncompletions == 0) |
| 2437 | return h->access.command_completed(h); |
| 2438 | else { |
| 2439 | struct sendcmd_reject_list *srl; |
| 2440 | int n; |
| 2441 | srl = &h->scsi_rejects; |
| 2442 | n = --srl->ncompletions; |
| 2443 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ |
| 2444 | printk("p"); |
| 2445 | return srl->complete[n]; |
| 2446 | } |
| 2447 | #else |
| 2448 | return h->access.command_completed(h); |
| 2449 | #endif |
| 2450 | } |
| 2451 | |
| 2452 | static inline int interrupt_pending(ctlr_info_t *h) |
| 2453 | { |
| 2454 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2455 | return ( h->access.intr_pending(h) |
| 2456 | || (h->scsi_rejects.ncompletions > 0)); |
| 2457 | #else |
| 2458 | return h->access.intr_pending(h); |
| 2459 | #endif |
| 2460 | } |
| 2461 | |
| 2462 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 2463 | { |
| 2464 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2465 | return (((h->access.intr_pending(h) == 0) || |
| 2466 | (h->interrupts_enabled == 0)) |
| 2467 | && (h->scsi_rejects.ncompletions == 0)); |
| 2468 | #else |
| 2469 | return (((h->access.intr_pending(h) == 0) || |
| 2470 | (h->interrupts_enabled == 0))); |
| 2471 | #endif |
| 2472 | } |
| 2473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs) |
| 2475 | { |
| 2476 | ctlr_info_t *h = dev_id; |
| 2477 | CommandList_struct *c; |
| 2478 | unsigned long flags; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2479 | __u32 a, a1, a2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | int j; |
| 2481 | int start_queue = h->next_to_run; |
| 2482 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2483 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2484 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | /* |
| 2486 | * If there are completed commands in the completion queue, |
| 2487 | * we had better do something about it. |
| 2488 | */ |
| 2489 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2490 | while (interrupt_pending(h)) { |
| 2491 | while((a = get_next_completion(h)) != FIFO_EMPTY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | a1 = a; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2493 | if ((a & 0x04)) { |
| 2494 | a2 = (a >> 3); |
| 2495 | if (a2 >= NR_CMDS) { |
| 2496 | printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr); |
| 2497 | fail_all_cmds(h->ctlr); |
| 2498 | return IRQ_HANDLED; |
| 2499 | } |
| 2500 | |
| 2501 | c = h->cmd_pool + a2; |
| 2502 | a = c->busaddr; |
| 2503 | |
| 2504 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2505 | a &= ~3; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2506 | if ((c = h->cmpQ) == NULL) { |
| 2507 | printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2508 | continue; |
| 2509 | } |
| 2510 | while(c->busaddr != a) { |
| 2511 | c = c->next; |
| 2512 | if (c == h->cmpQ) |
| 2513 | break; |
| 2514 | } |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2515 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | /* |
| 2517 | * If we've found the command, take it off the |
| 2518 | * completion Q and free it |
| 2519 | */ |
| 2520 | if (c->busaddr == a) { |
| 2521 | removeQ(&h->cmpQ, c); |
| 2522 | if (c->cmd_type == CMD_RWREQ) { |
| 2523 | complete_command(h, c, 0); |
| 2524 | } else if (c->cmd_type == CMD_IOCTL_PEND) { |
| 2525 | complete(c->waiting); |
| 2526 | } |
| 2527 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 2528 | else if (c->cmd_type == CMD_SCSI) |
| 2529 | complete_scsi_command(c, 0, a1); |
| 2530 | # endif |
| 2531 | continue; |
| 2532 | } |
| 2533 | } |
| 2534 | } |
| 2535 | |
| 2536 | /* check to see if we have maxed out the number of commands that can |
| 2537 | * be placed on the queue. If so then exit. We do this check here |
| 2538 | * in case the interrupt we serviced was from an ioctl and did not |
| 2539 | * free any new commands. |
| 2540 | */ |
| 2541 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) |
| 2542 | goto cleanup; |
| 2543 | |
| 2544 | /* We have room on the queue for more commands. Now we need to queue |
| 2545 | * them up. We will also keep track of the next queue to run so |
| 2546 | * that every queue gets a chance to be started first. |
| 2547 | */ |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2548 | for (j=0; j < h->highest_lun + 1; j++){ |
| 2549 | int curr_queue = (start_queue + j) % (h->highest_lun + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | /* make sure the disk has been added and the drive is real |
| 2551 | * because this can be called from the middle of init_one. |
| 2552 | */ |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2553 | if(!(h->drv[curr_queue].queue) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | !(h->drv[curr_queue].heads)) |
| 2555 | continue; |
| 2556 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 2557 | |
| 2558 | /* check to see if we have maxed out the number of commands |
| 2559 | * that can be placed on the queue. |
| 2560 | */ |
| 2561 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) |
| 2562 | { |
| 2563 | if (curr_queue == start_queue){ |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2564 | h->next_to_run = (start_queue + 1) % (h->highest_lun + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | goto cleanup; |
| 2566 | } else { |
| 2567 | h->next_to_run = curr_queue; |
| 2568 | goto cleanup; |
| 2569 | } |
| 2570 | } else { |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2571 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | } |
| 2573 | } |
| 2574 | |
| 2575 | cleanup: |
| 2576 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2577 | return IRQ_HANDLED; |
| 2578 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | /* |
| 2580 | * We cannot read the structure directly, for portablity we must use |
| 2581 | * the io functions. |
| 2582 | * This is for debug only. |
| 2583 | */ |
| 2584 | #ifdef CCISS_DEBUG |
| 2585 | static void print_cfg_table( CfgTable_struct *tb) |
| 2586 | { |
| 2587 | int i; |
| 2588 | char temp_name[17]; |
| 2589 | |
| 2590 | printk("Controller Configuration information\n"); |
| 2591 | printk("------------------------------------\n"); |
| 2592 | for(i=0;i<4;i++) |
| 2593 | temp_name[i] = readb(&(tb->Signature[i])); |
| 2594 | temp_name[4]='\0'; |
| 2595 | printk(" Signature = %s\n", temp_name); |
| 2596 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
| 2597 | printk(" Transport methods supported = 0x%x\n", |
| 2598 | readl(&(tb-> TransportSupport))); |
| 2599 | printk(" Transport methods active = 0x%x\n", |
| 2600 | readl(&(tb->TransportActive))); |
| 2601 | printk(" Requested transport Method = 0x%x\n", |
| 2602 | readl(&(tb->HostWrite.TransportRequest))); |
| 2603 | printk(" Coalese Interrupt Delay = 0x%x\n", |
| 2604 | readl(&(tb->HostWrite.CoalIntDelay))); |
| 2605 | printk(" Coalese Interrupt Count = 0x%x\n", |
| 2606 | readl(&(tb->HostWrite.CoalIntCount))); |
| 2607 | printk(" Max outstanding commands = 0x%d\n", |
| 2608 | readl(&(tb->CmdsOutMax))); |
| 2609 | printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes))); |
| 2610 | for(i=0;i<16;i++) |
| 2611 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 2612 | temp_name[16] = '\0'; |
| 2613 | printk(" Server Name = %s\n", temp_name); |
| 2614 | printk(" Heartbeat Counter = 0x%x\n\n\n", |
| 2615 | readl(&(tb->HeartBeat))); |
| 2616 | } |
| 2617 | #endif /* CCISS_DEBUG */ |
| 2618 | |
| 2619 | static void release_io_mem(ctlr_info_t *c) |
| 2620 | { |
| 2621 | /* if IO mem was not protected do nothing */ |
| 2622 | if( c->io_mem_addr == 0) |
| 2623 | return; |
| 2624 | release_region(c->io_mem_addr, c->io_mem_length); |
| 2625 | c->io_mem_addr = 0; |
| 2626 | c->io_mem_length = 0; |
| 2627 | } |
| 2628 | |
| 2629 | static int find_PCI_BAR_index(struct pci_dev *pdev, |
| 2630 | unsigned long pci_bar_addr) |
| 2631 | { |
| 2632 | int i, offset, mem_type, bar_type; |
| 2633 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
| 2634 | return 0; |
| 2635 | offset = 0; |
| 2636 | for (i=0; i<DEVICE_COUNT_RESOURCE; i++) { |
| 2637 | bar_type = pci_resource_flags(pdev, i) & |
| 2638 | PCI_BASE_ADDRESS_SPACE; |
| 2639 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 2640 | offset += 4; |
| 2641 | else { |
| 2642 | mem_type = pci_resource_flags(pdev, i) & |
| 2643 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
| 2644 | switch (mem_type) { |
| 2645 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 2646 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 2647 | offset += 4; /* 32 bit */ |
| 2648 | break; |
| 2649 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 2650 | offset += 8; |
| 2651 | break; |
| 2652 | default: /* reserved in PCI 2.2 */ |
| 2653 | printk(KERN_WARNING "Base address is invalid\n"); |
| 2654 | return -1; |
| 2655 | break; |
| 2656 | } |
| 2657 | } |
| 2658 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 2659 | return i+1; |
| 2660 | } |
| 2661 | return -1; |
| 2662 | } |
| 2663 | |
| 2664 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
| 2665 | { |
| 2666 | ushort subsystem_vendor_id, subsystem_device_id, command; |
| 2667 | __u32 board_id, scratchpad = 0; |
| 2668 | __u64 cfg_offset; |
| 2669 | __u32 cfg_base_addr; |
| 2670 | __u64 cfg_base_addr_index; |
| 2671 | int i; |
| 2672 | |
| 2673 | /* check to see if controller has been disabled */ |
| 2674 | /* BEFORE trying to enable it */ |
| 2675 | (void) pci_read_config_word(pdev, PCI_COMMAND,&command); |
| 2676 | if(!(command & 0x02)) |
| 2677 | { |
| 2678 | printk(KERN_WARNING "cciss: controller appears to be disabled\n"); |
| 2679 | return(-1); |
| 2680 | } |
| 2681 | |
| 2682 | if (pci_enable_device(pdev)) |
| 2683 | { |
| 2684 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
| 2685 | return( -1); |
| 2686 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2687 | |
| 2688 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 2689 | subsystem_device_id = pdev->subsystem_device; |
| 2690 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | |
| 2691 | subsystem_vendor_id); |
| 2692 | |
| 2693 | /* search for our IO range so we can protect it */ |
| 2694 | for(i=0; i<DEVICE_COUNT_RESOURCE; i++) |
| 2695 | { |
| 2696 | /* is this an IO range */ |
| 2697 | if( pci_resource_flags(pdev, i) & 0x01 ) { |
| 2698 | c->io_mem_addr = pci_resource_start(pdev, i); |
| 2699 | c->io_mem_length = pci_resource_end(pdev, i) - |
| 2700 | pci_resource_start(pdev, i) +1; |
| 2701 | #ifdef CCISS_DEBUG |
| 2702 | printk("IO value found base_addr[%d] %lx %lx\n", i, |
| 2703 | c->io_mem_addr, c->io_mem_length); |
| 2704 | #endif /* CCISS_DEBUG */ |
| 2705 | /* register the IO range */ |
| 2706 | if(!request_region( c->io_mem_addr, |
| 2707 | c->io_mem_length, "cciss")) |
| 2708 | { |
| 2709 | printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n", |
| 2710 | c->io_mem_addr, c->io_mem_length); |
| 2711 | c->io_mem_addr= 0; |
| 2712 | c->io_mem_length = 0; |
| 2713 | } |
| 2714 | break; |
| 2715 | } |
| 2716 | } |
| 2717 | |
| 2718 | #ifdef CCISS_DEBUG |
| 2719 | printk("command = %x\n", command); |
| 2720 | printk("irq = %x\n", pdev->irq); |
| 2721 | printk("board_id = %x\n", board_id); |
| 2722 | #endif /* CCISS_DEBUG */ |
| 2723 | |
| 2724 | c->intr = pdev->irq; |
| 2725 | |
| 2726 | /* |
| 2727 | * Memory base addr is first addr , the second points to the config |
| 2728 | * table |
| 2729 | */ |
| 2730 | |
| 2731 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
| 2732 | #ifdef CCISS_DEBUG |
| 2733 | printk("address 0 = %x\n", c->paddr); |
| 2734 | #endif /* CCISS_DEBUG */ |
| 2735 | c->vaddr = remap_pci_mem(c->paddr, 200); |
| 2736 | |
| 2737 | /* Wait for the board to become ready. (PCI hotplug needs this.) |
| 2738 | * We poll for up to 120 secs, once per 100ms. */ |
| 2739 | for (i=0; i < 1200; i++) { |
| 2740 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 2741 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 2742 | break; |
| 2743 | set_current_state(TASK_INTERRUPTIBLE); |
| 2744 | schedule_timeout(HZ / 10); /* wait 100ms */ |
| 2745 | } |
| 2746 | if (scratchpad != CCISS_FIRMWARE_READY) { |
| 2747 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); |
| 2748 | return -1; |
| 2749 | } |
| 2750 | |
| 2751 | /* get the address index number */ |
| 2752 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); |
| 2753 | cfg_base_addr &= (__u32) 0x0000ffff; |
| 2754 | #ifdef CCISS_DEBUG |
| 2755 | printk("cfg base address = %x\n", cfg_base_addr); |
| 2756 | #endif /* CCISS_DEBUG */ |
| 2757 | cfg_base_addr_index = |
| 2758 | find_PCI_BAR_index(pdev, cfg_base_addr); |
| 2759 | #ifdef CCISS_DEBUG |
| 2760 | printk("cfg base address index = %x\n", cfg_base_addr_index); |
| 2761 | #endif /* CCISS_DEBUG */ |
| 2762 | if (cfg_base_addr_index == -1) { |
| 2763 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); |
| 2764 | release_io_mem(c); |
| 2765 | return -1; |
| 2766 | } |
| 2767 | |
| 2768 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); |
| 2769 | #ifdef CCISS_DEBUG |
| 2770 | printk("cfg offset = %x\n", cfg_offset); |
| 2771 | #endif /* CCISS_DEBUG */ |
| 2772 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 2773 | cfg_base_addr_index) + cfg_offset, |
| 2774 | sizeof(CfgTable_struct)); |
| 2775 | c->board_id = board_id; |
| 2776 | |
| 2777 | #ifdef CCISS_DEBUG |
| 2778 | print_cfg_table(c->cfgtable); |
| 2779 | #endif /* CCISS_DEBUG */ |
| 2780 | |
| 2781 | for(i=0; i<NR_PRODUCTS; i++) { |
| 2782 | if (board_id == products[i].board_id) { |
| 2783 | c->product_name = products[i].product_name; |
| 2784 | c->access = *(products[i].access); |
| 2785 | break; |
| 2786 | } |
| 2787 | } |
| 2788 | if (i == NR_PRODUCTS) { |
| 2789 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
| 2790 | " to access the Smart Array controller %08lx\n", |
| 2791 | (unsigned long)board_id); |
| 2792 | return -1; |
| 2793 | } |
| 2794 | if ( (readb(&c->cfgtable->Signature[0]) != 'C') || |
| 2795 | (readb(&c->cfgtable->Signature[1]) != 'I') || |
| 2796 | (readb(&c->cfgtable->Signature[2]) != 'S') || |
| 2797 | (readb(&c->cfgtable->Signature[3]) != 'S') ) |
| 2798 | { |
| 2799 | printk("Does not appear to be a valid CISS config table\n"); |
| 2800 | return -1; |
| 2801 | } |
| 2802 | |
| 2803 | #ifdef CONFIG_X86 |
| 2804 | { |
| 2805 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 2806 | __u32 prefetch; |
| 2807 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); |
| 2808 | prefetch |= 0x100; |
| 2809 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); |
| 2810 | } |
| 2811 | #endif |
| 2812 | |
| 2813 | #ifdef CCISS_DEBUG |
| 2814 | printk("Trying to put board into Simple mode\n"); |
| 2815 | #endif /* CCISS_DEBUG */ |
| 2816 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
| 2817 | /* Update the field, and then ring the doorbell */ |
| 2818 | writel( CFGTBL_Trans_Simple, |
| 2819 | &(c->cfgtable->HostWrite.TransportRequest)); |
| 2820 | writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); |
| 2821 | |
| 2822 | /* under certain very rare conditions, this can take awhile. |
| 2823 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 2824 | * as we enter this code.) */ |
| 2825 | for(i=0;i<MAX_CONFIG_WAIT;i++) { |
| 2826 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 2827 | break; |
| 2828 | /* delay and try again */ |
| 2829 | set_current_state(TASK_INTERRUPTIBLE); |
| 2830 | schedule_timeout(10); |
| 2831 | } |
| 2832 | |
| 2833 | #ifdef CCISS_DEBUG |
| 2834 | printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL)); |
| 2835 | #endif /* CCISS_DEBUG */ |
| 2836 | #ifdef CCISS_DEBUG |
| 2837 | print_cfg_table(c->cfgtable); |
| 2838 | #endif /* CCISS_DEBUG */ |
| 2839 | |
| 2840 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) |
| 2841 | { |
| 2842 | printk(KERN_WARNING "cciss: unable to get board into" |
| 2843 | " simple mode\n"); |
| 2844 | return -1; |
| 2845 | } |
| 2846 | return 0; |
| 2847 | |
| 2848 | } |
| 2849 | |
| 2850 | /* |
| 2851 | * Gets information about the local volumes attached to the controller. |
| 2852 | */ |
| 2853 | static void cciss_getgeometry(int cntl_num) |
| 2854 | { |
| 2855 | ReportLunData_struct *ld_buff; |
| 2856 | ReadCapdata_struct *size_buff; |
| 2857 | InquiryData_struct *inq_buff; |
| 2858 | int return_code; |
| 2859 | int i; |
| 2860 | int listlength = 0; |
| 2861 | __u32 lunid = 0; |
| 2862 | int block_size; |
| 2863 | int total_size; |
| 2864 | |
| 2865 | ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2866 | if (ld_buff == NULL) |
| 2867 | { |
| 2868 | printk(KERN_ERR "cciss: out of memory\n"); |
| 2869 | return; |
| 2870 | } |
| 2871 | memset(ld_buff, 0, sizeof(ReportLunData_struct)); |
| 2872 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); |
| 2873 | if (size_buff == NULL) |
| 2874 | { |
| 2875 | printk(KERN_ERR "cciss: out of memory\n"); |
| 2876 | kfree(ld_buff); |
| 2877 | return; |
| 2878 | } |
| 2879 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); |
| 2880 | if (inq_buff == NULL) |
| 2881 | { |
| 2882 | printk(KERN_ERR "cciss: out of memory\n"); |
| 2883 | kfree(ld_buff); |
| 2884 | kfree(size_buff); |
| 2885 | return; |
| 2886 | } |
| 2887 | /* Get the firmware version */ |
| 2888 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, |
| 2889 | sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD); |
| 2890 | if (return_code == IO_OK) |
| 2891 | { |
| 2892 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
| 2893 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; |
| 2894 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; |
| 2895 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; |
| 2896 | } else /* send command failed */ |
| 2897 | { |
| 2898 | printk(KERN_WARNING "cciss: unable to determine firmware" |
| 2899 | " version of controller\n"); |
| 2900 | } |
| 2901 | /* Get the number of logical volumes */ |
| 2902 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, |
| 2903 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD); |
| 2904 | |
| 2905 | if( return_code == IO_OK) |
| 2906 | { |
| 2907 | #ifdef CCISS_DEBUG |
| 2908 | printk("LUN Data\n--------------------------\n"); |
| 2909 | #endif /* CCISS_DEBUG */ |
| 2910 | |
| 2911 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; |
| 2912 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; |
| 2913 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; |
| 2914 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
| 2915 | } else /* reading number of logical volumes failed */ |
| 2916 | { |
| 2917 | printk(KERN_WARNING "cciss: report logical volume" |
| 2918 | " command failed\n"); |
| 2919 | listlength = 0; |
| 2920 | } |
| 2921 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
| 2922 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) |
| 2923 | { |
| 2924 | printk(KERN_ERR "ciss: only %d number of logical volumes supported\n", |
| 2925 | CISS_MAX_LUN); |
| 2926 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
| 2927 | } |
| 2928 | #ifdef CCISS_DEBUG |
| 2929 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0], |
| 2930 | ld_buff->LUNListLength[1], ld_buff->LUNListLength[2], |
| 2931 | ld_buff->LUNListLength[3], hba[cntl_num]->num_luns); |
| 2932 | #endif /* CCISS_DEBUG */ |
| 2933 | |
| 2934 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2935 | // for(i=0; i< hba[cntl_num]->num_luns; i++) |
| 2936 | for(i=0; i < CISS_MAX_LUN; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2938 | if (i < hba[cntl_num]->num_luns){ |
| 2939 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) |
| 2940 | << 24; |
| 2941 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) |
| 2942 | << 16; |
| 2943 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) |
| 2944 | << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); |
| 2946 | |
| 2947 | hba[cntl_num]->drv[i].LunID = lunid; |
| 2948 | |
| 2949 | |
| 2950 | #ifdef CCISS_DEBUG |
| 2951 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2952 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], |
| 2953 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], |
| 2954 | hba[cntl_num]->drv[i].LunID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | #endif /* CCISS_DEBUG */ |
| 2956 | cciss_read_capacity(cntl_num, i, size_buff, 0, |
| 2957 | &total_size, &block_size); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2958 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
| 2959 | block_size, inq_buff, &hba[cntl_num]->drv[i]); |
| 2960 | } else { |
| 2961 | /* initialize raid_level to indicate a free space */ |
| 2962 | hba[cntl_num]->drv[i].raid_level = -1; |
| 2963 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | } |
| 2965 | kfree(ld_buff); |
| 2966 | kfree(size_buff); |
| 2967 | kfree(inq_buff); |
| 2968 | } |
| 2969 | |
| 2970 | /* Function to find the first free pointer into our hba[] array */ |
| 2971 | /* Returns -1 if no free entries are left. */ |
| 2972 | static int alloc_cciss_hba(void) |
| 2973 | { |
| 2974 | struct gendisk *disk[NWD]; |
| 2975 | int i, n; |
| 2976 | for (n = 0; n < NWD; n++) { |
| 2977 | disk[n] = alloc_disk(1 << NWD_SHIFT); |
| 2978 | if (!disk[n]) |
| 2979 | goto out; |
| 2980 | } |
| 2981 | |
| 2982 | for(i=0; i< MAX_CTLR; i++) { |
| 2983 | if (!hba[i]) { |
| 2984 | ctlr_info_t *p; |
| 2985 | p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
| 2986 | if (!p) |
| 2987 | goto Enomem; |
| 2988 | memset(p, 0, sizeof(ctlr_info_t)); |
| 2989 | for (n = 0; n < NWD; n++) |
| 2990 | p->gendisk[n] = disk[n]; |
| 2991 | hba[i] = p; |
| 2992 | return i; |
| 2993 | } |
| 2994 | } |
| 2995 | printk(KERN_WARNING "cciss: This driver supports a maximum" |
| 2996 | " of %d controllers.\n", MAX_CTLR); |
| 2997 | goto out; |
| 2998 | Enomem: |
| 2999 | printk(KERN_ERR "cciss: out of memory.\n"); |
| 3000 | out: |
| 3001 | while (n--) |
| 3002 | put_disk(disk[n]); |
| 3003 | return -1; |
| 3004 | } |
| 3005 | |
| 3006 | static void free_hba(int i) |
| 3007 | { |
| 3008 | ctlr_info_t *p = hba[i]; |
| 3009 | int n; |
| 3010 | |
| 3011 | hba[i] = NULL; |
| 3012 | for (n = 0; n < NWD; n++) |
| 3013 | put_disk(p->gendisk[n]); |
| 3014 | kfree(p); |
| 3015 | } |
| 3016 | |
| 3017 | /* |
| 3018 | * This is it. Find all the controllers and register them. I really hate |
| 3019 | * stealing all these major device numbers. |
| 3020 | * returns the number of block devices registered. |
| 3021 | */ |
| 3022 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
| 3023 | const struct pci_device_id *ent) |
| 3024 | { |
| 3025 | request_queue_t *q; |
| 3026 | int i; |
| 3027 | int j; |
| 3028 | int rc; |
| 3029 | |
| 3030 | printk(KERN_DEBUG "cciss: Device 0x%x has been found at" |
| 3031 | " bus %d dev %d func %d\n", |
| 3032 | pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn), |
| 3033 | PCI_FUNC(pdev->devfn)); |
| 3034 | i = alloc_cciss_hba(); |
| 3035 | if(i < 0) |
| 3036 | return (-1); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3037 | |
| 3038 | hba[i]->busy_initializing = 1; |
| 3039 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | if (cciss_pci_init(hba[i], pdev) != 0) |
| 3041 | goto clean1; |
| 3042 | |
| 3043 | sprintf(hba[i]->devname, "cciss%d", i); |
| 3044 | hba[i]->ctlr = i; |
| 3045 | hba[i]->pdev = pdev; |
| 3046 | |
| 3047 | /* configure PCI DMA stuff */ |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3048 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3049 | printk("cciss: using DAC cycles\n"); |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3050 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | printk("cciss: not using DAC cycles\n"); |
| 3052 | else { |
| 3053 | printk("cciss: no suitable DMA available\n"); |
| 3054 | goto clean1; |
| 3055 | } |
| 3056 | |
| 3057 | /* |
| 3058 | * register with the major number, or get a dynamic major number |
| 3059 | * by passing 0 as argument. This is done for greater than |
| 3060 | * 8 controller support. |
| 3061 | */ |
| 3062 | if (i < MAX_CTLR_ORIG) |
| 3063 | hba[i]->major = MAJOR_NR + i; |
| 3064 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
| 3065 | if(rc == -EBUSY || rc == -EINVAL) { |
| 3066 | printk(KERN_ERR |
| 3067 | "cciss: Unable to get major number %d for %s " |
| 3068 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); |
| 3069 | goto clean1; |
| 3070 | } |
| 3071 | else { |
| 3072 | if (i >= MAX_CTLR_ORIG) |
| 3073 | hba[i]->major = rc; |
| 3074 | } |
| 3075 | |
| 3076 | /* make sure the board interrupts are off */ |
| 3077 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); |
| 3078 | if( request_irq(hba[i]->intr, do_cciss_intr, |
| 3079 | SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM, |
| 3080 | hba[i]->devname, hba[i])) { |
| 3081 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
| 3082 | hba[i]->intr, hba[i]->devname); |
| 3083 | goto clean2; |
| 3084 | } |
| 3085 | hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL); |
| 3086 | hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent( |
| 3087 | hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
| 3088 | &(hba[i]->cmd_pool_dhandle)); |
| 3089 | hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent( |
| 3090 | hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct), |
| 3091 | &(hba[i]->errinfo_pool_dhandle)); |
| 3092 | if((hba[i]->cmd_pool_bits == NULL) |
| 3093 | || (hba[i]->cmd_pool == NULL) |
| 3094 | || (hba[i]->errinfo_pool == NULL)) { |
| 3095 | printk( KERN_ERR "cciss: out of memory"); |
| 3096 | goto clean4; |
| 3097 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3098 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3099 | hba[i]->scsi_rejects.complete = |
| 3100 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * |
| 3101 | (NR_CMDS + 5), GFP_KERNEL); |
| 3102 | if (hba[i]->scsi_rejects.complete == NULL) { |
| 3103 | printk( KERN_ERR "cciss: out of memory"); |
| 3104 | goto clean4; |
| 3105 | } |
| 3106 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3107 | spin_lock_init(&hba[i]->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3108 | |
| 3109 | /* Initialize the pdev driver private data. |
| 3110 | have it point to hba[i]. */ |
| 3111 | pci_set_drvdata(pdev, hba[i]); |
| 3112 | /* command and error info recs zeroed out before |
| 3113 | they are used */ |
| 3114 | memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long)); |
| 3115 | |
| 3116 | #ifdef CCISS_DEBUG |
| 3117 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i); |
| 3118 | #endif /* CCISS_DEBUG */ |
| 3119 | |
| 3120 | cciss_getgeometry(i); |
| 3121 | |
| 3122 | cciss_scsi_setup(i); |
| 3123 | |
| 3124 | /* Turn the interrupts on so we can service requests */ |
| 3125 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); |
| 3126 | |
| 3127 | cciss_procinit(i); |
Mike Miller | d6dbf42 | 2005-09-21 09:55:32 -0700 | [diff] [blame] | 3128 | hba[i]->busy_initializing = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3129 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3130 | for(j=0; j < NWD; j++) { /* mfm */ |
| 3131 | drive_info_struct *drv = &(hba[i]->drv[j]); |
| 3132 | struct gendisk *disk = hba[i]->gendisk[j]; |
| 3133 | |
| 3134 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); |
| 3135 | if (!q) { |
| 3136 | printk(KERN_ERR |
| 3137 | "cciss: unable to allocate queue for disk %d\n", |
| 3138 | j); |
| 3139 | break; |
| 3140 | } |
| 3141 | drv->queue = q; |
| 3142 | |
| 3143 | q->backing_dev_info.ra_pages = READ_AHEAD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3144 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
| 3145 | |
| 3146 | /* This is a hardware imposed limit. */ |
| 3147 | blk_queue_max_hw_segments(q, MAXSGENTRIES); |
| 3148 | |
| 3149 | /* This is a limit in the driver and could be eliminated. */ |
| 3150 | blk_queue_max_phys_segments(q, MAXSGENTRIES); |
| 3151 | |
| 3152 | blk_queue_max_sectors(q, 512); |
| 3153 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3154 | q->queuedata = hba[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3155 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
| 3156 | sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j); |
| 3157 | disk->major = hba[i]->major; |
| 3158 | disk->first_minor = j << NWD_SHIFT; |
| 3159 | disk->fops = &cciss_fops; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3160 | disk->queue = q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3161 | disk->private_data = drv; |
| 3162 | /* we must register the controller even if no disks exist */ |
| 3163 | /* this is for the online array utilities */ |
| 3164 | if(!drv->heads && j) |
| 3165 | continue; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3166 | blk_queue_hardsect_size(q, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3167 | set_capacity(disk, drv->nr_blocks); |
| 3168 | add_disk(disk); |
| 3169 | } |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3171 | return(1); |
| 3172 | |
| 3173 | clean4: |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3174 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3175 | if(hba[i]->scsi_rejects.complete) |
| 3176 | kfree(hba[i]->scsi_rejects.complete); |
| 3177 | #endif |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 3178 | kfree(hba[i]->cmd_pool_bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3179 | if(hba[i]->cmd_pool) |
| 3180 | pci_free_consistent(hba[i]->pdev, |
| 3181 | NR_CMDS * sizeof(CommandList_struct), |
| 3182 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 3183 | if(hba[i]->errinfo_pool) |
| 3184 | pci_free_consistent(hba[i]->pdev, |
| 3185 | NR_CMDS * sizeof( ErrorInfo_struct), |
| 3186 | hba[i]->errinfo_pool, |
| 3187 | hba[i]->errinfo_pool_dhandle); |
| 3188 | free_irq(hba[i]->intr, hba[i]); |
| 3189 | clean2: |
| 3190 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
| 3191 | clean1: |
| 3192 | release_io_mem(hba[i]); |
| 3193 | free_hba(i); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3194 | hba[i]->busy_initializing = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3195 | return(-1); |
| 3196 | } |
| 3197 | |
| 3198 | static void __devexit cciss_remove_one (struct pci_dev *pdev) |
| 3199 | { |
| 3200 | ctlr_info_t *tmp_ptr; |
| 3201 | int i, j; |
| 3202 | char flush_buf[4]; |
| 3203 | int return_code; |
| 3204 | |
| 3205 | if (pci_get_drvdata(pdev) == NULL) |
| 3206 | { |
| 3207 | printk( KERN_ERR "cciss: Unable to remove device \n"); |
| 3208 | return; |
| 3209 | } |
| 3210 | tmp_ptr = pci_get_drvdata(pdev); |
| 3211 | i = tmp_ptr->ctlr; |
| 3212 | if (hba[i] == NULL) |
| 3213 | { |
| 3214 | printk(KERN_ERR "cciss: device appears to " |
| 3215 | "already be removed \n"); |
| 3216 | return; |
| 3217 | } |
| 3218 | /* Turn board interrupts off and send the flush cache command */ |
| 3219 | /* sendcmd will turn off interrupt, and send the flush... |
| 3220 | * To write all data in the battery backed cache to disks */ |
| 3221 | memset(flush_buf, 0, 4); |
| 3222 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, |
| 3223 | TYPE_CMD); |
| 3224 | if(return_code != IO_OK) |
| 3225 | { |
| 3226 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", |
| 3227 | i); |
| 3228 | } |
| 3229 | free_irq(hba[i]->intr, hba[i]); |
| 3230 | pci_set_drvdata(pdev, NULL); |
| 3231 | iounmap(hba[i]->vaddr); |
| 3232 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
| 3233 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
| 3234 | remove_proc_entry(hba[i]->devname, proc_cciss); |
| 3235 | |
| 3236 | /* remove it from the disk list */ |
| 3237 | for (j = 0; j < NWD; j++) { |
| 3238 | struct gendisk *disk = hba[i]->gendisk[j]; |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 3239 | if (disk) { |
| 3240 | request_queue_t *q = disk->queue; |
| 3241 | |
| 3242 | if (disk->flags & GENHD_FL_UP) |
| 3243 | del_gendisk(disk); |
| 3244 | if (q) |
| 3245 | blk_cleanup_queue(q); |
Mike Miller | 6a445d3 | 2005-09-13 01:25:23 -0700 | [diff] [blame] | 3246 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3247 | } |
| 3248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3249 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
| 3250 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 3251 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct), |
| 3252 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
| 3253 | kfree(hba[i]->cmd_pool_bits); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3254 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3255 | kfree(hba[i]->scsi_rejects.complete); |
| 3256 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3257 | release_io_mem(hba[i]); |
| 3258 | free_hba(i); |
| 3259 | } |
| 3260 | |
| 3261 | static struct pci_driver cciss_pci_driver = { |
| 3262 | .name = "cciss", |
| 3263 | .probe = cciss_init_one, |
| 3264 | .remove = __devexit_p(cciss_remove_one), |
| 3265 | .id_table = cciss_pci_device_id, /* id_table */ |
| 3266 | }; |
| 3267 | |
| 3268 | /* |
| 3269 | * This is it. Register the PCI driver information for the cards we control |
| 3270 | * the OS will call our registered routines when it finds one of our cards. |
| 3271 | */ |
| 3272 | static int __init cciss_init(void) |
| 3273 | { |
| 3274 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 3275 | |
| 3276 | /* Register for our PCI devices */ |
| 3277 | return pci_module_init(&cciss_pci_driver); |
| 3278 | } |
| 3279 | |
| 3280 | static void __exit cciss_cleanup(void) |
| 3281 | { |
| 3282 | int i; |
| 3283 | |
| 3284 | pci_unregister_driver(&cciss_pci_driver); |
| 3285 | /* double check that all controller entrys have been removed */ |
| 3286 | for (i=0; i< MAX_CTLR; i++) |
| 3287 | { |
| 3288 | if (hba[i] != NULL) |
| 3289 | { |
| 3290 | printk(KERN_WARNING "cciss: had to remove" |
| 3291 | " controller %d\n", i); |
| 3292 | cciss_remove_one(hba[i]->pdev); |
| 3293 | } |
| 3294 | } |
| 3295 | remove_proc_entry("cciss", proc_root_driver); |
| 3296 | } |
| 3297 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3298 | static void fail_all_cmds(unsigned long ctlr) |
| 3299 | { |
| 3300 | /* If we get here, the board is apparently dead. */ |
| 3301 | ctlr_info_t *h = hba[ctlr]; |
| 3302 | CommandList_struct *c; |
| 3303 | unsigned long flags; |
| 3304 | |
| 3305 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); |
| 3306 | h->alive = 0; /* the controller apparently died... */ |
| 3307 | |
| 3308 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 3309 | |
| 3310 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
| 3311 | |
| 3312 | /* move everything off the request queue onto the completed queue */ |
| 3313 | while( (c = h->reqQ) != NULL ) { |
| 3314 | removeQ(&(h->reqQ), c); |
| 3315 | h->Qdepth--; |
| 3316 | addQ (&(h->cmpQ), c); |
| 3317 | } |
| 3318 | |
| 3319 | /* Now, fail everything on the completed queue with a HW error */ |
| 3320 | while( (c = h->cmpQ) != NULL ) { |
| 3321 | removeQ(&h->cmpQ, c); |
| 3322 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
| 3323 | if (c->cmd_type == CMD_RWREQ) { |
| 3324 | complete_command(h, c, 0); |
| 3325 | } else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3326 | complete(c->waiting); |
| 3327 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3328 | else if (c->cmd_type == CMD_SCSI) |
| 3329 | complete_scsi_command(c, 0, 0); |
| 3330 | #endif |
| 3331 | } |
| 3332 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 3333 | return; |
| 3334 | } |
| 3335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3336 | module_init(cciss_init); |
| 3337 | module_exit(cciss_cleanup); |